Tiled Map Setup: Ground tiles, ruins & automated asset processing

Features:
- Resized 4513 PNG assets to 40% for optimal Tiled performance
- Created comprehensive tileset library (grass, dirt, trees, flowers, ruins, walls)
- Generated 3 test maps: travnik_32x32, zapuscena_vas_48x48, travnik_s_objekti
- Added 9 different ruined building tilesets for TownRestorationSystem integration

 Tools Added:
- resize_assets_for_tiled.py: Batch resize all assets to 40%
- generate_tiled_map.py: Auto-generate maps with placed objects
- fix_tiled_map.py: Create proper tile-based maps

 Structure:
- Slike_za_Tiled/: 4513 resized assets ready for Tiled
- assets/tilesets/: 16 tileset definitions (.tsx files)
- assets/maps/: 3 ready-to-use Tiled maps (.tmx files)

 Documentation:
- docs/TILED_SETUP_GUIDE.md: Complete setup and usage guide

Ready for map design in Tiled Map Editor!

assets/maps/ground_test_16x16.tmx

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.10" tiledversion="1.11.1" orientation="orthogonal" renderorder="right-down" width="16" height="16" tilewidth="48" tileheight="48" infinite="0" nextlayerid="2" nextobjectid="1">
+ <tileset firstgid="1" source="../tilesets/grass_ground.tsx"/>
+ <tileset firstgid="2" source="../tilesets/dirt_ground.tsx"/>
+ <layer id="1" name="Ground" width="16" height="16">
+  <data encoding="csv">
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
+</data>
+ </layer>
+</map>