Standardize API Key Environment Variable

[CodeMaverick-143]

The code in insight/detector.py checks for both GOOGLE_API_KEY and GEMINI_API_KEY. It would be better to standardize on one (GOOGLE_API_KEY) and update the documentation accordingly.

[AmbarMishra973]

Hi 👋,
I’d like to work on this issue. I can update the code to use only GOOGLE_API_KEY and also update the documentation accordingly. Could you please assign this to me? Thanks!

[CodeMaverick-143]

@AmbarMishra973 Assigned