refactor: remove CRM application files and configurations

- Deleted index.css, main.tsx, and browser.ts to clean up unused styles and mock server setup.
- Removed schema definitions and related files for contacts, opportunities, and dashboard to streamline the project structure.
- Cleared out TypeScript configuration files (tsconfig.json and tsconfig.node.json) and Vite configuration files to eliminate unnecessary complexity.
- Removed ObjectAgGrid demo example to focus on core functionalities.

Author: hotlong