Move /e2e -> /e2e-tests

e2e-tests/cypress/tests/integration/channels/messaging/helpers.js

@@ -0,0 +1,9 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+export function verifyDraftIcon(name, isVisible) {
+    cy.uiGetLhsSection('CHANNELS').find(`#sidebarItem_${name}`).
+        should('be.visible').
+        findByTestId('draftIcon').
+        should(isVisible ? 'be.visible' : 'not.exist');
+}