docs, community[patch], experimental[patch], langchain[patch], cli[pa… (#15412)

…tch]: import models from community

ran
```bash
git grep -l 'from langchain\.chat_models' | xargs -L 1 sed -i '' "s/from\ langchain\.chat_models/from\ langchain_community.chat_models/g"
git grep -l 'from langchain\.llms' | xargs -L 1 sed -i '' "s/from\ langchain\.llms/from\ langchain_community.llms/g"
git grep -l 'from langchain\.embeddings' | xargs -L 1 sed -i '' "s/from\ langchain\.embeddings/from\ langchain_community.embeddings/g"
git checkout master libs/langchain/tests/unit_tests/llms
git checkout master libs/langchain/tests/unit_tests/chat_models
git checkout master libs/langchain/tests/unit_tests/embeddings/test_imports.py
make format
cd libs/langchain; make format
cd ../experimental; make format
cd ../core; make format
```

templates/openai-functions-tool-retrieval-agent/openai_functions_tool_retrieval_agent/agent.py

@@ -6,8 +6,6 @@ from langchain.agents import (
 )
 from langchain.agents.format_scratchpad import format_to_openai_functions
 from langchain.agents.output_parsers import OpenAIFunctionsAgentOutputParser
-from langchain.chat_models import ChatOpenAI
-from langchain.embeddings import OpenAIEmbeddings
 from langchain.prompts import (
     ChatPromptTemplate,
     MessagesPlaceholder,
@@ -17,6 +15,8 @@ from langchain.tools.render import format_tool_to_openai_function
 from langchain.tools.tavily_search import TavilySearchResults
 from langchain.utilities.tavily_search import TavilySearchAPIWrapper
 from langchain.vectorstores import FAISS
+from langchain_community.chat_models import ChatOpenAI
+from langchain_community.embeddings import OpenAIEmbeddings
 from langchain_core.messages import AIMessage, HumanMessage
 from langchain_core.pydantic_v1 import BaseModel, Field
 from langchain_core.runnables import Runnable, RunnableLambda, RunnableParallel