Write config with project settings editor

include/core/metatile.h

@@ -93,6 +93,7 @@ public:
     static QPoint coordFromPixmapCoord(const QPointF &pixelCoord);
     static int getDefaultAttributesSize(BaseGameVersion version);
     static void setCustomLayout(Project*);
+    static QString getMetatileIdString(uint16_t metatileId) { return "0x" + QString("%1").arg(metatileId, 3, 16, QChar('0')).toUpper(); };
 
 private:
     // Stores how each attribute should be laid out for all metatiles, according to the user's config