feat: warnings when instance resources are linked

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/minecraft/WorldList.h

@@ -33,7 +33,8 @@ public:
         NameColumn,
         GameModeColumn,
         LastPlayedColumn,
-        SizeColumn
+        SizeColumn,
+        InfoColumn
     };
 
     enum Roles
@@ -112,6 +113,8 @@ public:
         return m_dir;
     }
 
+    QString instDirPath() const;
+
     const QList<World> &allWorlds() const
     {
         return worlds;