Update .luacheckrc

.luacheckrc

@@ -1,3 +1,27 @@
+-- FIXME testing some minetest-mods/i3 luacheck settings
+
+allow_defined_top
+
+read_globals = {
+	"minetest",
+	"armor",
+	"skins",
+	"awards",
+	"vector",
+	"string",
+	"table",
+	"ItemStack",
+	"VoxelArea",
+	"VoxelManip",
+}
+
+globals = {
+	"i3",
+	"core",
+	"sfinv",
+	"unified_inventory",
+}
+
 ignore = {
 	-- list taken from https://stackoverflow.com/questions/49158143/how-to-ignore-luacheck-warnings/49160695#56618022 as
 	-- all the third party mods would be hard to manage otherwise
@@ -56,5 +80,7 @@ ignore = {
     "631", -- Line is too long.
 }
 
-
+exclude_files = {
+	"i3
+}