AuthMessage

- Added new message type

source/davinci/c2s/auth.d

@@ -0,0 +1,17 @@
+module davinci.c2s.auth;
+
+import davinci.base;
+import msgpack;
+
+public final class AuthMessage : Command
+{
+    // TODO: Put authentication details here
+    private string username;
+    private string password;
+
+    this()
+    {
+        registerClass!(typeof(this));
+    }
+
+}