Add WebSocket support and enhance chat functionality

- Implement WebSocket handling in the FastCGI server, allowing for real-time communication.
- Introduce functions for managing WebSocket connections, broadcasting messages, and sending to specific connections.
- Create a chat interface in the `websockets.ws.uce` file, including message handling and user notifications.
- Refactor existing code to accommodate WebSocket integration, ensuring compatibility with HTTP requests.
- Update documentation to reflect new features and usage instructions for WebSocket functionality.

src/lib/types.cpp

@@ -47,7 +47,10 @@ void Request::ob_start()
 
 Request::~Request()
 {
+	for(auto* stream : ob_stack)
+		delete stream;
+	ob_stack.clear();
+	ob = 0;
 	for(auto& sockfd : resources.sockets)
 		close(sockfd);
 }
-