feat(proxy-protocol): add PROXY protocol v2 support to the Rust passthrough listener and streamline TypeScript proxy protocol exports

ts/protocols/proxy/index.ts

@@ -1,7 +1,6 @@
 /**
  * PROXY Protocol Module
- * HAProxy PROXY protocol implementation
+ * Type definitions for HAProxy PROXY protocol v1/v2
  */
 
-export * from './types.js';
-export * from './parser.js';
+export * from './types.js';