Transfer all code to TS

ui/src/lib/auth0.ts

@@ -0,0 +1,8 @@
+import { Auth0Client } from "@auth0/nextjs-auth0/server";
+
+export const auth0 = new Auth0Client({
+    authorizationParameters: {
+        scope: process.env.AUTH0_SCOPE,
+        audience: process.env.AUTH0_AUDIENCE
+    }
+});