- Add new Vertex AI remote inference provider with litellm integration
- Support for Gemini models through Google Cloud Vertex AI platform
- Uses Google Cloud Application Default Credentials (ADC) for authentication
- Added VertexAI models: gemini-2.5-flash, gemini-2.5-pro, gemini-2.0-flash.
- Updated provider registry to include vertexai provider
- Add vertexai to INFERENCE_PROVIDER_IDS in starter distribution template
- Update VertexAI provider to be conditionally included in starter template when VERTEX_AI_PROJECT env var is set
- Added comprehensive documentation and sample configuration
Signed-off-by: Eran Cohen <eranco@redhat.com>
