Default: Add nodebox mese post light usable as a growlamp (#1480)

Light level 14 to be able to grow plants.
3 returned from crafting with 1 glass node, 3 mese crystals and 1
wood plank.
Seamlessly placable on appletree wood fence posts.

mods/default/crafting.lua

@@ -639,6 +639,15 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = "default:mese_post_light 3",
+	recipe = {
+		{"", "default:glass", ""},
+		{"default:mese_crystal", "default:mese_crystal", "default:mese_crystal"},
+		{"", "group:wood", ""},
+	}
+})
+
 minetest.register_craft({
 	output = 'default:obsidian_shard 9',
 	recipe = {