community[major], core[patch], langchain[patch], experimental[patch]: Create langchain-community (#14463)

Moved the following modules to new package langchain-community in a backwards compatible fashion:

```
mv langchain/langchain/adapters community/langchain_community
mv langchain/langchain/callbacks community/langchain_community/callbacks
mv langchain/langchain/chat_loaders community/langchain_community
mv langchain/langchain/chat_models community/langchain_community
mv langchain/langchain/document_loaders community/langchain_community
mv langchain/langchain/docstore community/langchain_community
mv langchain/langchain/document_transformers community/langchain_community
mv langchain/langchain/embeddings community/langchain_community
mv langchain/langchain/graphs community/langchain_community
mv langchain/langchain/llms community/langchain_community
mv langchain/langchain/memory/chat_message_histories community/langchain_community
mv langchain/langchain/retrievers community/langchain_community
mv langchain/langchain/storage community/langchain_community
mv langchain/langchain/tools community/langchain_community
mv langchain/langchain/utilities community/langchain_community
mv langchain/langchain/vectorstores community/langchain_community
mv langchain/langchain/agents/agent_toolkits community/langchain_community
mv langchain/langchain/cache.py community/langchain_community
mv langchain/langchain/adapters community/langchain_community
mv langchain/langchain/callbacks community/langchain_community/callbacks
mv langchain/langchain/chat_loaders community/langchain_community
mv langchain/langchain/chat_models community/langchain_community
mv langchain/langchain/document_loaders community/langchain_community
mv langchain/langchain/docstore community/langchain_community
mv langchain/langchain/document_transformers community/langchain_community
mv langchain/langchain/embeddings community/langchain_community
mv langchain/langchain/graphs community/langchain_community
mv langchain/langchain/llms community/langchain_community
mv langchain/langchain/memory/chat_message_histories community/langchain_community
mv langchain/langchain/retrievers community/langchain_community
mv langchain/langchain/storage community/langchain_community
mv langchain/langchain/tools community/langchain_community
mv langchain/langchain/utilities community/langchain_community
mv langchain/langchain/vectorstores community/langchain_community
mv langchain/langchain/agents/agent_toolkits community/langchain_community
mv langchain/langchain/cache.py community/langchain_community
```

Moved the following to core
```
mv langchain/langchain/utils/json_schema.py core/langchain_core/utils
mv langchain/langchain/utils/html.py core/langchain_core/utils
mv langchain/langchain/utils/strings.py core/langchain_core/utils
cat langchain/langchain/utils/env.py >> core/langchain_core/utils/env.py
rm langchain/langchain/utils/env.py
```

See .scripts/community_split/script_integrations.sh for all changes

libs/community/langchain_community/embeddings/__init__.py

@@ -0,0 +1,161 @@
+"""**Embedding models**  are wrappers around embedding models
+from different APIs and services.
+
+**Embedding models** can be LLMs or not.
+
+**Class hierarchy:**
+
+.. code-block::
+
+    Embeddings --> <name>Embeddings  # Examples: OpenAIEmbeddings, HuggingFaceEmbeddings
+"""
+
+
+import logging
+from typing import Any
+
+from langchain_community.embeddings.aleph_alpha import (
+    AlephAlphaAsymmetricSemanticEmbedding,
+    AlephAlphaSymmetricSemanticEmbedding,
+)
+from langchain_community.embeddings.awa import AwaEmbeddings
+from langchain_community.embeddings.azure_openai import AzureOpenAIEmbeddings
+from langchain_community.embeddings.baidu_qianfan_endpoint import (
+    QianfanEmbeddingsEndpoint,
+)
+from langchain_community.embeddings.bedrock import BedrockEmbeddings
+from langchain_community.embeddings.bookend import BookendEmbeddings
+from langchain_community.embeddings.clarifai import ClarifaiEmbeddings
+from langchain_community.embeddings.cohere import CohereEmbeddings
+from langchain_community.embeddings.dashscope import DashScopeEmbeddings
+from langchain_community.embeddings.databricks import DatabricksEmbeddings
+from langchain_community.embeddings.deepinfra import DeepInfraEmbeddings
+from langchain_community.embeddings.edenai import EdenAiEmbeddings
+from langchain_community.embeddings.elasticsearch import ElasticsearchEmbeddings
+from langchain_community.embeddings.embaas import EmbaasEmbeddings
+from langchain_community.embeddings.ernie import ErnieEmbeddings
+from langchain_community.embeddings.fake import (
+    DeterministicFakeEmbedding,
+    FakeEmbeddings,
+)
+from langchain_community.embeddings.fastembed import FastEmbedEmbeddings
+from langchain_community.embeddings.google_palm import GooglePalmEmbeddings
+from langchain_community.embeddings.gpt4all import GPT4AllEmbeddings
+from langchain_community.embeddings.gradient_ai import GradientEmbeddings
+from langchain_community.embeddings.huggingface import (
+    HuggingFaceBgeEmbeddings,
+    HuggingFaceEmbeddings,
+    HuggingFaceInferenceAPIEmbeddings,
+    HuggingFaceInstructEmbeddings,
+)
+from langchain_community.embeddings.huggingface_hub import HuggingFaceHubEmbeddings
+from langchain_community.embeddings.infinity import InfinityEmbeddings
+from langchain_community.embeddings.javelin_ai_gateway import JavelinAIGatewayEmbeddings
+from langchain_community.embeddings.jina import JinaEmbeddings
+from langchain_community.embeddings.johnsnowlabs import JohnSnowLabsEmbeddings
+from langchain_community.embeddings.llamacpp import LlamaCppEmbeddings
+from langchain_community.embeddings.localai import LocalAIEmbeddings
+from langchain_community.embeddings.minimax import MiniMaxEmbeddings
+from langchain_community.embeddings.mlflow import MlflowEmbeddings
+from langchain_community.embeddings.mlflow_gateway import MlflowAIGatewayEmbeddings
+from langchain_community.embeddings.modelscope_hub import ModelScopeEmbeddings
+from langchain_community.embeddings.mosaicml import MosaicMLInstructorEmbeddings
+from langchain_community.embeddings.nlpcloud import NLPCloudEmbeddings
+from langchain_community.embeddings.octoai_embeddings import OctoAIEmbeddings
+from langchain_community.embeddings.ollama import OllamaEmbeddings
+from langchain_community.embeddings.openai import OpenAIEmbeddings
+from langchain_community.embeddings.sagemaker_endpoint import (
+    SagemakerEndpointEmbeddings,
+)
+from langchain_community.embeddings.self_hosted import SelfHostedEmbeddings
+from langchain_community.embeddings.self_hosted_hugging_face import (
+    SelfHostedHuggingFaceEmbeddings,
+    SelfHostedHuggingFaceInstructEmbeddings,
+)
+from langchain_community.embeddings.sentence_transformer import (
+    SentenceTransformerEmbeddings,
+)
+from langchain_community.embeddings.spacy_embeddings import SpacyEmbeddings
+from langchain_community.embeddings.tensorflow_hub import TensorflowHubEmbeddings
+from langchain_community.embeddings.vertexai import VertexAIEmbeddings
+from langchain_community.embeddings.voyageai import VoyageEmbeddings
+from langchain_community.embeddings.xinference import XinferenceEmbeddings
+
+logger = logging.getLogger(__name__)
+
+__all__ = [
+    "OpenAIEmbeddings",
+    "AzureOpenAIEmbeddings",
+    "ClarifaiEmbeddings",
+    "CohereEmbeddings",
+    "DatabricksEmbeddings",
+    "ElasticsearchEmbeddings",
+    "FastEmbedEmbeddings",
+    "HuggingFaceEmbeddings",
+    "HuggingFaceInferenceAPIEmbeddings",
+    "InfinityEmbeddings",
+    "GradientEmbeddings",
+    "JinaEmbeddings",
+    "LlamaCppEmbeddings",
+    "HuggingFaceHubEmbeddings",
+    "MlflowEmbeddings",
+    "MlflowAIGatewayEmbeddings",
+    "ModelScopeEmbeddings",
+    "TensorflowHubEmbeddings",
+    "SagemakerEndpointEmbeddings",
+    "HuggingFaceInstructEmbeddings",
+    "MosaicMLInstructorEmbeddings",
+    "SelfHostedEmbeddings",
+    "SelfHostedHuggingFaceEmbeddings",
+    "SelfHostedHuggingFaceInstructEmbeddings",
+    "FakeEmbeddings",
+    "DeterministicFakeEmbedding",
+    "AlephAlphaAsymmetricSemanticEmbedding",
+    "AlephAlphaSymmetricSemanticEmbedding",
+    "SentenceTransformerEmbeddings",
+    "GooglePalmEmbeddings",
+    "MiniMaxEmbeddings",
+    "VertexAIEmbeddings",
+    "BedrockEmbeddings",
+    "DeepInfraEmbeddings",
+    "EdenAiEmbeddings",
+    "DashScopeEmbeddings",
+    "EmbaasEmbeddings",
+    "OctoAIEmbeddings",
+    "SpacyEmbeddings",
+    "NLPCloudEmbeddings",
+    "GPT4AllEmbeddings",
+    "XinferenceEmbeddings",
+    "LocalAIEmbeddings",
+    "AwaEmbeddings",
+    "HuggingFaceBgeEmbeddings",
+    "ErnieEmbeddings",
+    "JavelinAIGatewayEmbeddings",
+    "OllamaEmbeddings",
+    "QianfanEmbeddingsEndpoint",
+    "JohnSnowLabsEmbeddings",
+    "VoyageEmbeddings",
+    "BookendEmbeddings",
+]
+
+
+# TODO: this is in here to maintain backwards compatibility
+class HypotheticalDocumentEmbedder:
+    def __init__(self, *args: Any, **kwargs: Any):
+        logger.warning(
+            "Using a deprecated class. Please use "
+            "`from langchain.chains import HypotheticalDocumentEmbedder` instead"
+        )
+        from langchain.chains.hyde.base import HypotheticalDocumentEmbedder as H
+
+        return H(*args, **kwargs)  # type: ignore
+
+    @classmethod
+    def from_llm(cls, *args: Any, **kwargs: Any) -> Any:
+        logger.warning(
+            "Using a deprecated class. Please use "
+            "`from langchain.chains import HypotheticalDocumentEmbedder` instead"
+        )
+        from langchain.chains.hyde.base import HypotheticalDocumentEmbedder as H
+
+        return H.from_llm(*args, **kwargs)