Guide for connecting Google Gemini to Convier
GOOGLE_GEMINI_MODEL_NAME: e.g. gemini-2.5-flashGOOGLE_GEMINI_PROJECT_ID: Optional. Set if using Application Default Credentials (ADC)GOOGLE_GEMINI_LOCATION: OptionalGOOGLE_GEMINI_USE_VERTEX: Optional. Values: true or falseGOOGLE_GEMINI_API_KEY: Optional. Set if not using ADCGoogle Gemini