add example config files

bin/config/world.toml

@@ -0,0 +1,24 @@
+[world]
+height_tiles = 60
+refund_percentage = 75
+scrap_despawn_seconds = 30
+
+[regions]
+asteroid_width = 40
+player_buffer_width = 10
+contest_zone_width = 30
+enemy_buffer_width = 15
+
+[expansion]
+columns_per_expansion = 10
+cost_building_blocks = 200
+
+[push]
+push_expand_columns = 20
+scaling_factor = 1.2
+
+[waves]
+threat_rate_formula = "1*x - 30"
+gap_min_seconds = 15
+gap_max_seconds = 45
+spawn_duration_seconds = 10