Inventory compat cleanup

fix inventory_plus after cleanup. Create own register_on_player_receive_fields for this inventory

removed smart_inventory (moved to the inventoy mod), adjusted sfinv

moved sfinv to own mod 3d_armor_sfinv

moved unified_inventory to 3d_armor_ui

moved inventory_plus support to own mod 3d_armor_ip

3d_armor_sfinv/LICENSE.txt

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+[mod] 3d Armor sfinv integration [3d_armor_sfinv]
+=================================================
+
+License Source Code: (C) 2012-2017 Stuart Jones - LGPL v2.1
+

3d_armor_sfinv/depends.txt

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+3d_armor
+sfinv?

3d_armor_sfinv/description.txt

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+Adds 3d_armor page to the sfinv inventory

3d_armor_sfinv/init.lua

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+if not minetest.global_exists("sfinv") then
+	minetest.log("warning", "3d_armor_sfinv: Mod loaded but unused.")
+	return
+end
+
+sfinv.register_page("3d_armor:armor", {
+	title = "Armor",
+	get = function(self, player, context)
+		local name = player:get_player_name()
+		local formspec = armor:get_armor_formspec(name, true)
+		return sfinv.make_formspec(player, context, formspec, false)
+	end
+})
+armor:register_on_update(function(player)
+	if sfinv.enabled then
+		sfinv.set_player_inventory_formspec(player)
+	end
+end)