Add "The Upside down" map

upside_down/map.conf

@@ -0,0 +1,21 @@
+game_modes = return {"classes","classic"}
+barrier_area = return {pos2={z=235,x=205,y=175},pos1={z=0,x=0,y=0}}
+chests = return {{pos1={z=0,x=0,y=117.5},pos2={z=235,x=102,y=174.5},amount=50},{pos1={z=0,x=104,y=110.5},pos2={z=235,x=205,y=174.5},amount=50}}
+phys_jump = 1
+phys_gravity = 0.8
+time_speed = 1
+enable_shadows = 0.26
+phys_speed = 1
+skybox = none
+teams = local _={};_[1]="enabled";_[2]="flag_pos";return {blue={[_[2]]={z=111,x=19,y=128.5},pos1={z=235,x=0,y=-0.5},pos2={z=0,x=103,y=174.5},[_[1]]=true},red={[_[2]]={z=115,x=183,y=129.5},pos1={z=0,x=103,y=174.5},pos2={z=235,x=205,y=-0.5},[_[1]]=true}}
+treasures = default:steel_ingot;2;5;2;0.5;1;default:mese_crystal;2;5;1;0.2;1;default:diamond;2;5;1;0.1;1;wool:red;20;99;2;0.8;1;wool:blue;20;99;2;0.8;1;
+others = This map is exclusive to the April Fools event.
+initial_stuff = return {"default:pick_mese","default:cobble 30","default:torch 20","default:stick 10"}
+license = CC-BY-SA 4.0
+hint = Parkour through the trees, bridge, or tunnel to make your way to the enemy team. Look through the forest or dig all the way up in order to find loot chests.
+author = ClothierEdward
+start_time = 5900
+name = The Upside Down
+enabled = true
+size = return {z=235,x=205,y=175}
+map_version = 3