docs: integrations google packages (#28840)

Issue: several Google integrations are implemented on the
[github.com/googleapis](https://github.com/googleapis) organization
repos and these integrations are almost lost. But they are essential
integrations.
Change: added a list of all packages that have Google integrations.
Added a description of this situation.

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Co-authored-by: Erick Friis <erick@langchain.dev>
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: ccurme <chester.curme@gmail.com>
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Leonid Ganeline 2024-12-20 06:46:06 -08:00 committed by GitHub
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@ -2,6 +2,12 @@
All functionality related to [Google Cloud Platform](https://cloud.google.com/) and other `Google` products.
Integration packages for Gemini models and the VertexAI platform are maintained in
the [langchain-google](https://github.com/langchain-ai/langchain-google) repository.
You can find a host of LangChain integrations with other Google APIs in the
[googleapis](https://github.com/googleapis?q=langchain-&type=all&language=&sort=)
Github organization.
## Chat models
We recommend individual developers to start with Gemini API (`langchain-google-genai`) and move to Vertex AI (`langchain-google-vertexai`) when they need access to commercial support and higher rate limits. If youre already Cloud-friendly or Cloud-native, then you can get started in Vertex AI straight away.