added Google Generative AI (gemini) integration

.env.example

@@ -26,7 +26,7 @@ OPEN_ROUTER_API_KEY=
 GOOGLE_GENERATIVE_AI_API_KEY=
 
 # You only need this environment variable set if you want to use oLLAMA models
-#EXAMPLE http://localhost:11434
+# EXAMPLE http://localhost:11434
 OLLAMA_API_BASE_URL=
 
 # Include this environment variable if you want more logging for debugging locally