Export and Import vito settings (#606)

* Export and Import vito settings

* fix tests

app/Http/Middleware/MustBeAdminMiddleware.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+
+class MustBeAdminMiddleware
+{
+    public function handle(Request $request, Closure $next): mixed
+    {
+        if (! user()->isAdmin()) {
+            abort(403, 'You must be an admin to perform this action.');
+        }
+
+        return $next($request);
+    }
+}