[Feature] Implement FlixelTilemap for grid-based levels

[stringdotjar]

Replicate HaxeFlixel's FlxTilemap to allow for efficient rendering and collision of tile-based maps.

Requirements:

• Load map data from CSV strings, 2D arrays, or Tiled maps.
• Support for auto-tiling logic.
• Efficient rendering using a single StaticTiledMapRenderer or custom batching.
• Optimized collision handling for large maps.