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/tools/playwright/navigate.py

@@ -0,0 +1,81 @@
+from __future__ import annotations
+
+from typing import Optional, Type
+from urllib.parse import urlparse
+
+from langchain_core.callbacks import (
+    AsyncCallbackManagerForToolRun,
+    CallbackManagerForToolRun,
+)
+from langchain_core.pydantic_v1 import BaseModel, Field, validator
+
+from langchain_community.tools.playwright.base import BaseBrowserTool
+from langchain_community.tools.playwright.utils import (
+    aget_current_page,
+    get_current_page,
+)
+
+
+class NavigateToolInput(BaseModel):
+    """Input for NavigateToolInput."""
+
+    url: str = Field(..., description="url to navigate to")
+
+    @validator("url")
+    def validate_url_scheme(cls, url: str) -> str:
+        """Check that the URL scheme is valid."""
+        parsed_url = urlparse(url)
+        if parsed_url.scheme not in ("http", "https"):
+            raise ValueError("URL scheme must be 'http' or 'https'")
+        return url
+
+
+class NavigateTool(BaseBrowserTool):
+    """Tool for navigating a browser to a URL.
+
+    **Security Note**: This tool provides code to control web-browser navigation.
+
+        This tool can navigate to any URL, including internal network URLs, and
+        URLs exposed on the server itself.
+
+        However, if exposing this tool to end-users, consider limiting network
+        access to the server that hosts the agent.
+
+        By default, the URL scheme has been limited to 'http' and 'https' to
+        prevent navigation to local file system URLs (or other schemes).
+
+        If access to the local file system is required, consider creating a custom
+        tool or providing a custom args_schema that allows the desired URL schemes.
+
+        See https://python.langchain.com/docs/security for more information.
+    """
+
+    name: str = "navigate_browser"
+    description: str = "Navigate a browser to the specified URL"
+    args_schema: Type[BaseModel] = NavigateToolInput
+
+    def _run(
+        self,
+        url: str,
+        run_manager: Optional[CallbackManagerForToolRun] = None,
+    ) -> str:
+        """Use the tool."""
+        if self.sync_browser is None:
+            raise ValueError(f"Synchronous browser not provided to {self.name}")
+        page = get_current_page(self.sync_browser)
+        response = page.goto(url)
+        status = response.status if response else "unknown"
+        return f"Navigating to {url} returned status code {status}"
+
+    async def _arun(
+        self,
+        url: str,
+        run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
+    ) -> str:
+        """Use the tool."""
+        if self.async_browser is None:
+            raise ValueError(f"Asynchronous browser not provided to {self.name}")
+        page = await aget_current_page(self.async_browser)
+        response = await page.goto(url)
+        status = response.status if response else "unknown"
+        return f"Navigating to {url} returned status code {status}"