fix: Move content into to frontend directory

Doing this BEFORE the merge prevents a lot of merge conflicts.

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

frontend/cypress/support/get-by-id.ts

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+declare namespace Cypress {
+  interface Chainable {
+    getByCypressId(id: string): Chainable<Element>
+
+    findByCypressId(id: string): Chainable<Element>
+  }
+}
+
+const CYPRESS_ATTR = 'data-cypress-id'
+
+Cypress.Commands.add('getByCypressId', (id: string) => {
+  return cy.get(`[${CYPRESS_ATTR}="${id}"]`)
+})
+
+Cypress.Commands.add(
+  'findByCypressId',
+  {
+    prevSubject: 'element'
+  },
+  (parent: JQuery<HTMLElement>, id: string) => {
+    return cy.wrap(parent).find(`[${CYPRESS_ATTR}="${id}"]`)
+  }
+)