Started implementing QtEditor
TopPanel: Added textboxes and buttons
MainWindow: Set window title to "Map Editor"
TopPanel: Made textboxes and buttons class member
TopPanel: Made layouts class member
TopPanel: Implemented destructor
MainWindow: Made layout class member and implemented destructor
MapDisplay: Changed placeholder button to scroll area
MapDisplay: Made layout and scroll area class members and implmented destructor
Made MapDisplay a child of QWidget and implement setGridSize()
Control map size using textbox
Added symlink to assets folder and change default tile to concrete
Made TileChooser cycle tile on click and update TileButton to TileChooser's tile
when it's clicked
Use QVector instead of std::vector
MapDisplay: Only try to resize the map if the size actually changed
Made reset button functional
Added Tile class
Made save button functional
Added include guards
Moved constants to config.h