Added Google-Gemini api integration

[Ornithopter-pilot]

Added geminiapi for free users

@Chiragbisht added gemini api ,so that users can use either use openai api (need credits) or use gemini api (60 requests/min free) and run the app

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This discussion was created from the release Added Google-Gemini api integration.

[lakhman108]

Thank you

[gits-up]

Good work!