Fix browser compatibility by switching to UMD module format

Changed TypeScript compilation from CommonJS to UMD (Universal Module Definition) to support both browser and Node.js environments. The previous CommonJS format was causing "exports is not defined" errors in the GitHub Pages demo.

Changes:
- Updated tsconfig.json to use UMD module format
- Removed redundant manual module.exports checks from source files
- UMD wrapper now handles all export scenarios (Node.js, AMD, browser globals)
- Kept window assignments for browser global access

Author: hypexr