feat: add domain registration form and email notifications

- Create a new Blade view for domain registration (`registrant-tochuc.blade.php`) to capture organization and manager details.
- Implement email templates for new domain orders for both admin (`domain-order-new.blade.php`) and customers (`domain-order-received.blade.php`).
- Add CSV exports for client and domain data.
- Introduce tests for customer mass assignment, password reset, login throttling, and permission gating.
- Ensure service renewals use current pricing and validate ownership for virtual machines.
- Validate mass assignment behavior in service model.

app/Http/Controllers/Api/Admin/Role/RolePermissionController.php

@@ -103,6 +103,41 @@ class RolePermissionController extends Controller
         ]);
     }
 
+    /**
+     * POST /v1/administrator/role-permissions
+     * Tạo một vai trò mới (chỉ Full Administrator)
+     */
+    public function store(Request $request): JsonResponse
+    {
+        if (!$this->ensureFullAdmin()) {
+            return response()->json(['error' => true, 'message' => 'Bạn không có quyền truy cập'], 403);
+        }
+
+        $name = trim($request->input('name', ''));
+        if (!$name) {
+            return response()->json(['error' => true, 'message' => 'Tên vai trò không được trống'], 422);
+        }
+
+        if ($name === 'Full Administrator') {
+            return response()->json(['error' => true, 'message' => 'Tên vai trò không hợp lệ'], 422);
+        }
+
+        if (Role::where('guard_name', 'admin')->where('name', $name)->exists()) {
+            return response()->json(['error' => true, 'message' => "Vai trò \"{$name}\" đã tồn tại"], 422);
+        }
+
+        $role = Role::create(['name' => $name, 'guard_name' => 'admin']);
+
+        return response()->json([
+            'error' => false,
+            'data'  => [
+                'id'          => $role->id,
+                'name'        => $role->name,
+                'permissions' => [],
+            ],
+        ], 201);
+    }
+
     /**
      * POST /v1/administrator/role-permissions/permissions
      * Tạo một nhóm permissions mới theo module (chỉ Full Administrator)