Feat/add cloudflare rules (#32)

* feat: add Cloudflare Workers development standards for Hono framework

- Introduced new standards and best practices for developing Cloudflare Workers using the Hono framework.
- Enforced rules for routing, middleware usage, TypeScript integration, and application structure.
- Included examples and suggestions for proper implementation to enhance code quality and maintainability.

* chore: update .env.schema to mark TAVILY_API_KEY as sensitive and add documentation URL

Author: usrrname