* init litellm google gen ai methods
* feat init structure of functions for generate content
* add init
* add BaseGoogleGenAIGenerateContentConfig
* add generate_content_handler
* add get_provider_google_genai_generate_content_config
* fixes for generate content
* add get_vertex_ai_project etc to base
* use VertexBase
* fixes for BaseGoogleGenAIGenerateContentConfig
* working validate env for google gemini
* feat - add transform google response
* fixes for transform_generate_content_request
* fix get_supported_generate_content_optional_params
* add BaseGoogleGenAITest
* working e2e test
* fixes init config
* use correct types
* fix test for google gen ai
* fix types
* add sync_get_auth_token_and_url
* fixes for transform
* add llm http handler for google
* working non-streaming google endpoints
* add BaseGoogleGenAIGenerateContentStreamingIterator
* add GoogleGenAIGenerateContentStreamingIterator
* fix working sync stream
* fixes for litellm logging obj
* working async streaming
* add google gen ai types
* fix - required imports
* fix readme
* fix deps
* fix deps
* fix ruff code QA checks
* fix linting
* fixes TYPE_CHECKING
* fixes for typing
Ishaan Jaff