Feature: Help Header App + Menu

[madsrasmussen]

Description

This PR adds a "Help" header app, which includes a "Help" menu with links to the Umbraco Learning Base and Our. The two links are visible only to administrators. The feature is built on the "Menu" feature, allowing anyone to add additional menu items to the "Help" menu.

To register a custom link menu item in the Help menu:

import { UMB_HELP_MENU_ALIAS } from '@umbraco-cms/backoffice/help';

const manifest = {
  type: 'menuItem',
  kind: 'link',
  alias: 'My.MenuItem.NameOfLink',
  name: 'Name Of Link Menu Item',
  weight: 300,
  meta: {
    menus: [UMB_HELP_MENU_ALIAS],
    label: 'My Link',
    icon: 'icon-hearts',
    href: 'https://...',
  }
};

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[nielslyngsoe]

Good