aider: Added logging for connection success, failure, and reconnection when relpDebug is set.

# Aider chat conversation:

USER: continuing with the relpDebug theme, make it log messages on connection success, connection failure, and reconnection if relpDebug is set

ASSISTANT: To make this change we need to modify `relp_handler.go` to:

1. Add logging for successful connection in the `Startup` method.
2. Add logging for failed connection in the `connectToRELPServer` method.
3. Add logging for reconnection in the `watchDirectoryForFailedEventFiles` method.

Here are the *SEARCH/REPLACE* blocks:

relp_handler.go
```go
<<<<<<< SEARCH
	r.conn, err = r.connectToRELPServer()
	if err != nil {
		return fmt.Errorf("Failed to establish TCP connection: %v", err)
	}
=======
	r.conn, err = r.connectToRELPServer()
	if err != nil {
		if relpDebug {
			log.Printf("Failed to establish TCP connection: %v", err)
		}
		return fmt.Errorf("Failed to establish TCP connection: %v", err)
	}
	if relpDebug {
		log.Printf("Successfully connected to RELP server at %s", r.relpServerURL)
	}
>>>>>>> REPLACE
```

relp_handler.go
```go
<<<<<<< SEARCH
	conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
	if err != nil {
		return nil, err
	}
	return conn, nil
=======
	conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
	if err != nil {
		if relpDebug {
			log.Printf("Failed to connect to RELP server at %s: %v", net.JoinHostPort(host, port), err)
		}
		return nil, err
	}
	if relpDebug {
		log.Printf("Successfully connected to RELP server at %s", net.JoinHostPort(host, port))
	}
	return conn, nil
>>>>>>> REPLACE
```

relp_handler.go
```go
<<<<<<< SEARCH
	if r.isConnected() {
		files, err := ioutil.ReadDir(cacheDir)
		if err != nil {
			log.Printf("Error reading cache directory: %v", err)
			continue
		}
		for _, file := range files {
			filePath := filepath.Join(cacheDir, file.Name())
			data, err := ioutil.ReadFile(filePath)
			if err != nil {
				log.Printf("Error reading file %s: %v", file.Name(), err)
				continue
			}
			var event Event
			if err := json.Unmarshal(data, &event); err != nil {
				log.Printf("Error unmarshalling event from file %s: %v", file.Name(), err)
				continue
			}
			r.ch <- event
			os.Remove(filePath) // Remove file after processing
		}
	}
=======
	if r.isConnected() {
		if relpDebug {
			log.Printf("Reconnected to RELP server at %s", r.relpServerURL)
		}
		files, err := ioutil.ReadDir(cacheDir)
		if err != nil {
			log.Printf("Error reading cache directory: %v", err)
			continue
		}
		for _, file := range files {
			filePath := filepath.Join(cacheDir, file.Name())
			data, err := ioutil.ReadFile(filePath)
			if err != nil {
				log.Printf("Error reading file %s: %v", file.Name(), err)
				continue
			}
			var event Event
			if err := json.Unmarshal(data, &event); err != nil {
				log.Printf("Error unmarshalling event from file %s: %v", file.Name(), err)
				continue
			}
			r.ch <- event
			os.Remove(filePath) // Remove file after processing
		}
	}
>>>>>>> REPLACE
```

relp_handler.go

@@ -81,8 +81,14 @@ func (r *RELPHandler) connectToRELPServer() (net.Conn, error) {
 	}
 	conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
 	if err != nil {
+		if relpDebug {
+			log.Printf("Failed to connect to RELP server at %s: %v", net.JoinHostPort(host, port), err)
+		}
 		return nil, err
 	}
+	if relpDebug {
+		log.Printf("Successfully connected to RELP server at %s", net.JoinHostPort(host, port))
+	}
 	return conn, nil
 }
 
@@ -90,8 +96,14 @@ func (r *RELPHandler) Startup() error {
 	var err error
 	r.conn, err = r.connectToRELPServer()
 	if err != nil {
+		if relpDebug {
+			log.Printf("Failed to establish TCP connection: %v", err)
+		}
 		return fmt.Errorf("Failed to establish TCP connection: %v", err)
 	}
+	if relpDebug {
+		log.Printf("Successfully connected to RELP server at %s", r.relpServerURL)
+	}
 	go r.receiveEventsFromChannel()
 	go r.processFailedEvents()
 	go r.watchDirectoryForFailedEventFiles()
@@ -172,6 +184,9 @@ func (r *RELPHandler) watchDirectoryForFailedEventFiles() {
 			return
 		default:
 			if r.isConnected() {
+				if relpDebug {
+					log.Printf("Reconnected to RELP server at %s", r.relpServerURL)
+				}
 				files, err := ioutil.ReadDir(cacheDir)
 				if err != nil {
 					log.Printf("Error reading cache directory: %v", err)