feat: new separate frontend and backend folders with fastify as nodejs framework, libreconvert is configured in fastify as route

frontend/next.config.ts

@@ -0,0 +1,10 @@
+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  output: "standalone",
+  env: {
+    backend_url: "http://localhost:4000",
+  },
+};
+
+export default nextConfig;