add Mutiple OAuth2 Profile, swith based on api key

[waxz]

define GEMINI_PROJECT_MAP

GEMINI_PROJECT_MAP={"sk-key-0": {"GEMINI_PROJECT_ID": "xxxx","GCP_SERVICE_ACCOUNT":{"access_token":"ya29.a0AS3H6Nx...","refresh_token":"1//09FtpJYpxOd...","scope":"https://www.googleapis.com/auth/cloud-platform ...","token_type":"Bearer","id_token":"eyJhbGciOiJSUzI1NiIs...","expiry_date":1750927763467}}, "sk-key-1": {"GEMINI_PROJECT_ID": "xxxx","GCP_SERVICE_ACCOUNT":{"access_token":"ya29.a0AS3H6Nx...","refresh_token":"1//09FtpJYpxOd...","scope":"https://www.googleapis.com/auth/cloud-platform ...","token_type":"Bearer","id_token":"eyJhbGciOiJSUzI1NiIs...","expiry_date":1750927763467}}}

run

 curl localhost:8787/v1/chat/completions -H "Authorization : Bearer sk-key-0"  -H "Content-Type: application/json"   -d '{
    "model": "gemini-2.5-flash-lite",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "Hello, how are you?tell me a joke about earth"}
    ],
    "temperature": 0.7,
    "max_tokens": 150
  }'