13_wall: Add custom chest zones, give steel pick by default (#37)

Also make the mese ore above the arches breakable as originally intended

13_wall.conf

@@ -4,11 +4,17 @@ author = Thomas-S
 rotation = x
 name = The Wall
 hint = Look for a treasure room inside the wall!
-r = 110
-initial_stuff = default:pick_stone,default:sword_stone,default:stick 5,default:torch 3
+r = 70
+initial_stuff = default:pick_steel,default:sword_stone,default:stick 5,default:torch 3
 team.2 = blue
 h = 50
 team.2.color = blue
 team.2.pos = (-51,-15,-51)
 team.1 = red
 screenshot = 13_wall.png
+chests.1.from = (-69,-16,4)
+chests.1.to = (69,23,69)
+chests.1.n = 70
+chests.2.from = (-69,-16,-69)
+chests.2.to = (69,23,-4)
+chests.2.n = 70