feat: Unfinished level loading

- Added level struct
- Added loading tests
- Partially implemented level setting up system

assets/levels/level.toml

@@ -1,3 +1,6 @@
+[meta]
+tiles = [ "floors", "walls", "wall_connectors" ]
+
 [[tiles.floors]]
 x = 0
 y = 0
@@ -72,7 +75,7 @@ lock = "left"
 
 [[interactive.doors]]
 x = 11
-y = 1
+y = 5
 facing = "left"
 
 [[interactive.stairs]]
@@ -94,7 +97,7 @@ y = 5
 w = 4
 h = 4
 
-[interactive.containers.items]
+[[interactive.containers.items]]
 id = "lockpick"
 x = 2
 y = 2
@@ -105,6 +108,6 @@ y = 5
 w = 2
 h = 2
 
-[interactive.containers.items]
+[[interactive.containers.items]]
 id = "lockpick"
 rotated = true