Added WL1 map parsing

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/features/map/wolf_level.dart

@@ -0,0 +1,15 @@
+import 'package:wolf_dart/classes/matrix.dart';
+
+class WolfLevel {
+  final String name;
+  final int width; // Always 64 in standard Wolf3D
+  final int height; // Always 64
+  final Matrix<int> wallGrid;
+
+  WolfLevel({
+    required this.name,
+    required this.width,
+    required this.height,
+    required this.wallGrid,
+  });
+}