Fix ES module imports by adding .js extensions

- Added .js extensions to all import statements in source files
- Fixes ERR_MODULE_NOT_FOUND error when using package with Node.js
- Version bumped to 0.2.2

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/rondevu.ts

@@ -1,6 +1,6 @@
-import { RondevuAPI } from './client';
-import { RondevuConnection } from './connection';
-import { RondevuOptions, JoinOptions, RondevuConnectionParams } from './types';
+import { RondevuAPI } from './client.js';
+import { RondevuConnection } from './connection.js';
+import { RondevuOptions, JoinOptions, RondevuConnectionParams } from './types.js';
 
 /**
  * Main Rondevu WebRTC client with automatic connection management