Added missing stop Method for NetworkServer

src/main/java/dev/unlegitdqrk/unlegitlibrary/network/system/server/NetworkServer.java

@@ -95,6 +95,22 @@ public final class NetworkServer {
         }
     }
 
+    public boolean stop() {
+        for (ConnectionHandler connectionHandler : new ArrayList<>(connectionHandlers)) connectionHandler.disconnect();
+        incomingThread.interrupt();
+        try {
+            serverSocket.close();
+            serverSocket = null;
+            if (logger != null) logger.log("Server stopped");
+            else System.out.println("Server stopped");
+            return true;
+        } catch (Exception e) {
+            if (logger != null) logger.exception("Failed to stop", e);
+            else System.err.println("Failed to stop: " + e.getMessage());
+            return false;
+        }
+    }
+
     private void incomingConnections() {
         try {
             while (!serverSocket.isClosed()) {