unity project scope should be mandatory

Author: krasnotsvetov

resharper/resharper-unity/src/CSharp/Feature/Services/LiveTemplates/Scope/InUnityCSharpProject.cs

@@ -10,7 +10,7 @@ namespace JetBrains.ReSharper.Plugins.Unity.CSharp.Feature.Services.LiveTemplate
     // other scope points. A template can declare that it requires this scope point, and
     // the template will only be made available if a ScopeProvider "publishes" this scope
     // point based on the current context (e.g. the project is a Unity project)
-    public class InUnityCSharpProject : InLanguageSpecificProject
+    public class InUnityCSharpProject : InLanguageSpecificProject, IMandatoryScopePoint
     {
         private static readonly Guid DefaultUID = new Guid("B37325A3-4F0A-405B-8A5C-00ECA4ED3B30");
         private static readonly Guid QuickUID = new Guid("D32F297F-E422-4612-839A-FE76D9914B34");