Add luacheck and github workflow (#4)

Co-authored-by: BuckarooBanzay <BuckarooBanzay@users.noreply.github.com>
Co-authored-by: OgelGames <olliverdc28@gmail.com>

.luacheckrc

@@ -0,0 +1,18 @@
+unused_args = false
+
+globals = {
+	"biome_lib"
+}
+
+read_globals = {
+	-- Stdlib
+	string = {fields = {"split", "trim"}},
+	table = {fields = {"copy"}},
+
+	-- Minetest
+	"minetest", "vector",
+	"dump", "PerlinNoise",
+
+	-- mods
+	"default",
+}