extend level maintainer feedback (#316)

Co-authored-by: Nikolay S. <[email protected]>
Co-authored-by: Maya <[email protected]>

src/main/java/com/glodblock/github/api/registries/LevelState.java

@@ -5,5 +5,7 @@ public enum LevelState {
     Idle,
     Craft,
     Export,
-    Error
+    Error,
+    NotFound,
+    CantCraft
 }