feat: Add core map generation and management system

- Introduced MapData, MapGenerator, and MapPainter classes for procedural map generation.
- Implemented LevelManager to handle level initialization and navigation.
- Created TurnManager for managing turn order in a turn-based system.
- Added Player and Enemy character classes with movement and turn-taking capabilities.
- Established pathfinding using AStar2D in PathfindingHandler.
- Integrated new scenes for player and enemy characters, along with world setup.
- Included a new tileset for futuristic Zelda-themed assets.

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "godotTools.editorPath.godot4": "/home/stefwill/Applications/Godot/Godot_v4.6.1-stable_linux.x86_64"
+}