Implement PROXY protocol v1 support in SmartProxy

- Added ProxyProtocolParser class for parsing and generating PROXY protocol v1 headers.
- Integrated PROXY protocol parsing into RouteConnectionHandler for handling incoming connections from trusted proxies.
- Implemented WrappedSocket class to encapsulate real client information.
- Configured SmartProxy to accept and send PROXY protocol headers in routing actions.
- Developed comprehensive unit tests for PROXY protocol parsing and generation.
- Documented usage patterns, configuration, and best practices for proxy chaining scenarios.
- Added security and performance considerations for PROXY protocol implementation.

ts/core/utils/index.ts

@@ -15,3 +15,4 @@ export * from './lifecycle-component.js';
 export * from './binary-heap.js';
 export * from './enhanced-connection-pool.js';
 export * from './socket-utils.js';
+export * from './proxy-protocol.js';