tests(permissions): add cypress tests for permission alert icon

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

frontend/src/pages/api/private/users/mock.ts

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import type { UserInfo } from '../../../../api/users/types'
+import { HttpMethod, respondToMatchingRequest } from '../../../../handler-utils/respond-to-matching-request'
+import type { NextApiRequest, NextApiResponse } from 'next'
+
+const handler = (req: NextApiRequest, res: NextApiResponse): void => {
+  respondToMatchingRequest<UserInfo>(HttpMethod.GET, req, res, {
+    username: 'mock',
+    displayName: 'Mock User',
+    photoUrl: ''
+  })
+}
+
+export default handler