Message manager

- Added `QUEUE_DEFAULT_SIZE` with a value of `100`

Queue

- Added new type

MEssageManager

- Added basic message manager sub-system
- This is still a work-in-progress

source/renaissance/server/messagemanager.d

@@ -0,0 +1,39 @@
+module renaissance.server.messagemanager;
+
+import renaissance.server.server : Server;
+
+public enum QUEUE_DEFAULT_SIZE = 100;
+
+public class Queue
+{
+    private size_t maxSize;
+
+    public this(size_t maxSize = QUEUE_DEFAULT_SIZE)
+    {
+
+    }
+}
+
+public class MessageManager
+{
+    private Server server;
+
+    private Queue sendQueue;
+    private Queue receiveQueue;
+
+    private this()
+    {
+        // Initialize the queues (send+receive)
+        this.sendQueue = new Queue();
+        this.receiveQueue = new Queue();
+    }
+    
+    public static MessageManager create(Server server)
+    {
+        MessageManager manager = new MessageManager();
+        manager.server = server;
+
+
+        return manager;
+    }
+}