Create a sloppy packLoader that might not even work

This will be useful for future version formats to parse them into a common format.

src/packLoader.js

@@ -0,0 +1,11 @@
+import { readFile } from "node:fs/promises";
+
+function packLoader(file) {
+	return new Promise((resolve, reject) => {
+		readFile(file, { encoding: "utf8" }).then(contents => {
+			resolve(JSON.parse(contents));
+		});
+	});
+}
+
+export default packLoader;