Using tileset with size different than map tile/grid size

[Kedan]

Tiled™ allows you to use tilesets with tile size different than tile size defined in map options. This couse problems:

1. tson::Tile::getDrawindRect() - returns wrong texture coordinates -> [ map_grid_width * tile_x_index, map_grid_height * tile_y_index, tile.width, tile.height ]. Should be: [ tile_width * tile_x_index, tile_height * tile_y_index, tile.width, tile.height ]. Note that tile width and height are correct.
2. tson::TileObject::getPosition() return wrong tile position on the map -> [ tile_width * tile_x_index, tile_height * tile_y_index ]. Should be: [ map_grid_width * tile_x_index, map_grid_height * tile_y_index ]