add: MessageBus

src/Interfaces/IMessageClient.cs

@@ -0,0 +1,15 @@
+using Godot;
+using Polonium.MessageManager;
+
+namespace Polonium.Interfaces;
+
+public interface IMessageClient
+{
+    string PostCode { get; set; }
+    void ReceiveMessage(PoloniumMessage msg);
+
+    delegate void MessageSentEventHandler(PoloniumMessage msg); 
+    event MessageSentEventHandler MessageSent;
+
+    public void SendMessage(PoloniumMessage msg);
+}

src/Interfaces/IPoloniumFactory.cs

@@ -1,8 +1,9 @@
+using Polonium.MessageManager;
 using Polonium.Resources;
 
 namespace Polonium.Interfaces;
 
 public interface IPoloniumFactory
 {
-    public SignalHeader CreateSignalHeader();
+    public MessageHeader CreateMessageHeader();
 }