Add Gemini AI Suite to Boilerplate section

[skappax]

Summary

Adds Gemini AI Suite to the Boilerplate section.

• Repository: https://github.com/skappax/gemini-ai-suite
• Demo & Documentation: https://skappax.github.io/gemini-ai-suite/
• Key Features: Production FastAPI microservices implementing Google Gemini 2.5 Flash Vision for structured multimodal invoice extraction and Gemini 2.5 Pro for customer ticket sentiment triage. 100% type-safe with Pydantic V2 and automated CI test coverage.

Thank you!