Issue: Tiled map loader missing point object support and TMJ loader crash on collection-of-images tilesets

Issue: Tiled map loader missing point object support and TMJ loader crash on collection-of-images tilesets: a task in LegoFlow-SWE (Harbor dataset). TMX (XML) example: xml <objectgroup name="objects" <object id="18" name="Point" x="333.265" y="218.203" <point/ </object </objectgroup