Ores: Add tin ore, lump, ingot and block

Use Calinou's textures from moreores mod.
Craft bronze from tin and copper instead of steel and copper.
Match ore density to the moreores mod but start ore at a depth of
y = -32 to be part of the depth progression of other ores.

mods/default/nodes.lua

@@ -107,6 +107,10 @@ default:steelblock
 
 default:stone_with_copper
 default:copperblock
+
+default:stone_with_tin
+default:tinblock
+
 default:bronzeblock
 
 default:stone_with_gold
@@ -1046,6 +1050,24 @@ minetest.register_node("default:copperblock", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
+
+minetest.register_node("default:stone_with_tin", {
+	description = "Tin Ore",
+	tiles = {"default_stone.png^default_mineral_tin.png"},
+	groups = {cracky = 2},
+	drop = "default:tin_lump",
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("default:tinblock", {
+	description = "Tin Block",
+	tiles = {"default_tin_block.png"},
+	is_ground_content = false,
+	groups = {cracky = 1, level = 2},
+	sounds = default.node_sound_metal_defaults(),
+})
+
+
 minetest.register_node("default:bronzeblock", {
 	description = "Bronze Block",
 	tiles = {"default_bronze_block.png"},