feat: Add `gemini` ai models

[afzal442]

This PR adds gemini ai models into this demo which helps users to make use of any of the Gen AI models

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[afzal442]

Hi @kwindla could you review it as to what it needs? This pull request introduces support for the Gemini model across various parts of the codebase. The most important changes include adding the Gemini API key to the environment configuration, updating the POST request handler to include the Gemini API key, and adding Gemini model options to the configuration and UI.

Configuration updates:

• env.example: Added GEMINI_API_KEY to the environment variables.

API updates:

• app/api/route.ts: Included gemini in the api_keys object within the POST request handler.

UI updates:

• components/Splash.tsx: Added display entries for "Gemini 1.5 Flash" and "Gemini 1.5 Flash 8b" in the splash screen.

Model configuration updates:

• rtvi.config.ts: Added Gemini model options to the LLM_MODEL_CHOICES array.Thanks

[markbackman]

Hey! Thanks for posting this. We just updated the demo for RTVI 0.2.0 and added Gemini and Grok to the demo. Check it out.

Here's that PR: https://github.com/daily-demos/daily-bots-web-demo/pull/14.

I'm going to close this PR for now.