MM-54123 Add group to channel (#22954)

* adding group members to channel initial commit

* adding group to channel functionality along with add new team members

* fixing circular dependency

* fixing e2e and other optimizations

* adding e2e tests for adding group members to channels

* cypress lint

* fixing comments

* adding count to button

* improvements

* adjusting some stuff from PR comments

* remove ability to add user to team, update message for non-team members

* remove adding to team from add groups functionality

* update misspelled variable

* lint and unit test fixes

* add tests, cleanup

* lint fix

* revert package-lock.json

* fixes for cypress tests

* rename TeamInviteBanner to TeamWarningBanner, since invites are no longer allowed

* update for warning

* lint fixes

* cleanup

* fix failing e2e tests

* update messages to not use markdown

---------

Co-authored-by: Scott Bishel <scott.bishel@mattermost.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/cypress/tests/support/api/group.ts

@@ -0,0 +1,45 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+// *****************************************************************************
+// Groups
+// https://api.mattermost.com/#tag/groups
+// *****************************************************************************
+
+import {ChainableT} from '../../types';
+
+function apiCreateCustomUserGroup(displayName: string, name: string, userIds: string[]): ChainableT<Cypress.Group> {
+    return cy.request({
+        headers: {'X-Requested-With': 'XMLHttpRequest'},
+        url: '/api/v4/groups',
+        method: 'POST',
+        body: {
+            display_name: displayName,
+            name,
+            source: 'custom',
+            allow_reference: true,
+            user_ids: userIds,
+        },
+    }).then((response) => {
+        expect(response.status).to.equal(201);
+        return cy.wrap(response);
+    });
+}
+
+Cypress.Commands.add('apiCreateCustomUserGroup', apiCreateCustomUserGroup);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+
+            /**
+             * Create custom user group
+             * @param {string} displayName - the display name of the group
+             * @param {string} name - the @ mentionable name of the group
+             * @param {string[]} userIds - users to add to the group
+             */
+            apiCreateCustomUserGroup: typeof apiCreateCustomUserGroup;
+        }
+    }
+}

e2e-tests/cypress/tests/support/api/index.js

@@ -8,6 +8,7 @@ import './cloud';
 import './cluster';
 import './common';
 import './data_retention';
+import './group';
 import './keycloak';
 import './ldap';
 import './playbooks';