Add new map and tileset files for Windows release

- Created test.tmj and test.tsj files in the maps directory.
- Added tileset.tsj with configuration for the MainTileset including image path and dimensions.

release/windows/assets/maps/tileset.tsj

@@ -0,0 +1,12 @@
+{
+  "columns": 1,
+  "image": "../assets/images/1 Tiles/Tile_12.png",
+  "imageheight": 32,
+  "imagewidth": 32,
+  "name": "MainTileset",
+  "tilecount": 1,
+  "tileheight": 32,
+  "tilewidth": 32,
+  "type": "tileset",
+  "version": "1.9"
+}