more work on gtk & code cleanup

Pilz.Net/ConnectionManagerBase.cs

@@ -7,7 +7,7 @@ namespace Pilz.Net;
 public abstract class ConnectionManagerBase(int port)
 {
     private const int HEADER_LENGTH = 12;
-    
+
     private bool listening = false;
     private readonly Dictionary<int, Dictionary<int, byte[]>> dicData = [];
 
@@ -122,13 +122,15 @@ public abstract class ConnectionManagerBase(int port)
             finalBuffer.Add((byte)(value >> 16 & 0xFF));
             finalBuffer.Add((byte)(value >> 8 & 0xFF));
             finalBuffer.Add((byte)(value & 0xFF));
-        };
+        }
+        ;
         void addHeader(int packageID, int packagesCount)
         {
             addInteger(dataID); // Data ID
             addInteger(packageID); // Package ID
             addInteger(packagesCount); // Packages Count
-        };
+        }
+        ;
 
         // Send data (this if statement and else content might be useless)
         if (data.Length > maxDataSize)