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/encounters/dummy.lua

@@ -0,0 +1,21 @@
+local Dummy, super = Class(Encounter)
+
+function Dummy:init()
+    super.init(self)
+
+    -- Text displayed at the bottom of the screen at the start of the encounter
+    self.text = "* The tutorial begins...?"
+
+    -- Battle music ("battle" is rude buster)
+    self.music = "battle"
+    -- Enables the purple grid battle background
+    self.background = true
+
+    -- Add the dummy enemy to the encounter
+    self:addEnemy("dummy")
+
+    --- Uncomment this line to add another!
+    --self:addEnemy("dummy")
+end
+
+return Dummy