Add loot data

[scriptsengineer]

Use minetest for example

• Loot from the default mod is registered here,
  -- with the rest being registered in the respective mods

dungeon_loot.registered_loot = {
-- various items
{name = "default:stick", chance = 0.6, count = {3, 6}},
{name = "default:flint", chance = 0.4, count = {1, 3}},

-- farming / consumable
{name = "default:apple", chance = 0.4, count = {1, 4}},
{name = "default:cactus", chance = 0.4, count = {1, 4},
types = {"sandstone", "desert"}},

-- minerals
{name = "default:coal_lump", chance = 0.9, count = {1, 12}},
{name = "default:gold_ingot", chance = 0.5},
{name = "default:steel_ingot", chance = 0.4, count = {1, 6}},
{name = "default:mese_crystal", chance = 0.1, count = {2, 3}},

-- tools
{name = "default:sword_wood", chance = 0.6},
{name = "default:pick_stone", chance = 0.3},
{name = "default:axe_diamond", chance = 0.05},