feat: add lua universe package and stylua command to fmt check

Signed-off-by: teddylear <teddylear@protonmail.com>

pkg/universe.dagger.io/x/teddylear@protonmail.com/lua/test/fmtCheck.cue

@@ -0,0 +1,19 @@
+package lua
+
+import (
+	"dagger.io/dagger"
+	"universe.dagger.io/x/teddylear@protonmail.com/lua"
+)
+
+dagger.#Plan & {
+	client: filesystem: "./data/hello": read: contents: dagger.#FS
+
+	actions: test: {
+		simple: {
+			fmtCheck: lua.#StyluaCheck & {
+				source: client.filesystem."./data/hello".read.contents
+			}
+		}
+	}
+}
+