Frontend first draft

frontend/pweb/lib/pages/signup/form/buttons.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+
+
+class SignUpBackButton extends StatelessWidget {
+  const SignUpBackButton({super.key});
+
+  @override
+  Widget build(BuildContext context) => Row(
+    children: [
+      IconButton(
+        onPressed: Navigator.of(context).pop,
+        icon: const Icon(Icons.arrow_back),
+      ),
+    ],
+  );
+}