Add Gemma 3 27b it to gemini api provider

[alirezaapub]

Please add gemma 3 27b and default gemini flash 2.0 to the gemini api provider. In this provided link you can see its instructions. Thanks 🙏🏻.

https://ai.google.dev/gemma/docs/core/gemma_on_gemini_api

[chrarnoldus]

May I invite you to make a pull request? They should be added here: https://github.com/Kilo-Org/kilocode/blob/main/packages/types/src/providers/gemini.ts