Add foundation for Round End Summary Screen.

Adjust GamePreset class, added title alongside description.

Content.Server/GameTicking/GamePreset.cs

@@ -1,4 +1,4 @@
-namespace Content.Server.GameTicking
+namespace Content.Server.GameTicking
 {
     /// <summary>
     ///     A round-start setup preset, such as which antagonists to spawn.
@@ -6,6 +6,7 @@ namespace Content.Server.GameTicking
     public abstract class GamePreset
     {
         public abstract void Start();
+        public virtual string ModeTitle => "Sandbox";
         public virtual string Description => "Secret!";
     }
 }