[Feature Request]: Gemini 2.0 from the new GenAI SDK

[TheMellyBee]

Feature Description

Google has implemented a new API, that looks like it might take over the previous two (Gemini SDK and VertexAI SDK).

• https://cloud.google.com/vertex-ai/generative-ai/docs/gemini-v2
• https://googleapis.github.io/python-genai/

This api looks like what they will be doing going foward, it enables you to set it to use either API key so it's more flexible to get the right fit for billing, and where the newest releases go.

I'm hoping this would be a pretty simple change over from what the vertex ai or gemini integrations do as it's set u p fairly similar.

Reason

Long term this is going to the primary SDK for all google models for both gemini, vertexAI, and model garden.

Value of Feature

One SDK handles all api calls and multiple GCP billing avenues. This also allows to get new model releases before the other SDKs

[logan-markewich]

@TheMellyBee would love a PR for this. Also means we could deprecate the current gemini and vertex packages