Refactor API routes and add status endpoint

Moved download and gamefiles routes to api/v2 directory and updated service imports. Added a new api/v2/status endpoint to report maintenance status. Introduced api/v1/file route to return 410 error for deprecated launcher support.

routes/api/v1/file/index.js

@@ -0,0 +1,9 @@
+const express = require("express")
+const router = express.Router()
+const { DefaultError } = require("../../../../errors/errors")
+
+router.get(/.*/, async (req, res) => {
+    throw new DefaultError(410, "Support for old launcher permanently removed.")
+})
+
+module.exports = router