Add new maps and tileset for the game world

- Created room1.tmx and room1.lua for the first room in the game, including tiles, collision objects, and NPCs.
- Added room2.tmx and room2.lua for the second room, featuring tiles, collision objects, and an enemy.
- Introduced a world template to manage map transitions and layout.
- Implemented a new tileset (castle.tsx and castle.lua) for the castle theme, including tile properties and image references.

scripts/battle/waves/basic.lua

@@ -0,0 +1,25 @@
+local Basic, super = Class(Wave)
+
+function Basic:onStart()
+    -- Every 0.33 seconds...
+    self.timer:every(1 / 3, function()
+        -- Our X position is offscreen, to the right
+        local x = SCREEN_WIDTH + 20
+        -- Get a random Y position between the top and the bottom of the arena
+        local y = MathUtils.random(Game.battle.arena.top, Game.battle.arena.bottom)
+
+        -- Spawn smallbullet going left with speed 8 (see scripts/battle/bullets/smallbullet.lua)
+        local bullet = self:spawnBullet("smallbullet", x, y, math.rad(180), 8)
+
+        -- Dont remove the bullet offscreen, because we spawn it offscreen
+        bullet.remove_offscreen = false
+    end)
+end
+
+function Basic:update()
+    -- Code here gets called every frame
+
+    super.update(self)
+end
+
+return Basic