Updated MinetestForFun Game

- Moved farming and screwdriver into MinetestForFun Game
 - Updated files (mostly `is_ground_content`)
 - Removed weird partial copy of jukebox in MinetestForFun Game

minetestforfun_game/mods/farming/mapgen.lua

@@ -0,0 +1,46 @@
+
+-- spawn new foods on map
+
+local function register_plant(name, min, max, spawnby, num)
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = {"default:dirt_with_grass"},
+		sidelen = 16,
+		noise_params = {
+			offset = 0,
+			scale = 0.006,
+			spread = {x=100, y=100, z=100},
+			seed = 329,
+			octaves = 3,
+			persist = 0.6
+		},
+		y_min = min,
+		y_max = max,
+		decoration = "farming:"..name,
+		spawn_by = spawnby,
+		num_spawn_by = num,
+	})
+end
+
+function farming.register_mgv6_decorations()
+	register_plant("potato_3", 15, 40, "", -1)
+	register_plant("tomato_7", 5, 20, "", -1)
+	register_plant("carrot_8", 1, 30, "group:water", 1)
+	register_plant("cucumber_4", 1, 20, "group:water", 1)
+	register_plant("corn_7", 12, 22, "", -1)
+	register_plant("corn_8", 10, 20, "", -1)
+	register_plant("coffee_5", 20, 45, "", -1)
+	register_plant("melon_8", 1, 20, "group:water", 1)
+	register_plant("pumpkin_8", 1, 20, "group:water", 1)
+	register_plant("raspberry_4", 3, 10, "", -1)
+	register_plant("rhubarb_3", 3, 15, "group:tree", 1)
+	register_plant("blueberry_4", 3, 10, "", -1)
+	register_plant("beanbush", 18, 35, "", -1)
+end
+
+-- enable in mapgen v6 only
+
+local mg_params = minetest.get_mapgen_params()
+if mg_params.mgname == "v6" then
+	farming.register_mgv6_decorations()
+end