feat: Move menu categories to public UI config

[denisogolubev]

Now it is possible to configure categories in public UI config and specify key in every dashboard you need. It helps not to duplicate every category configuration in every dashboard.

Public UI config example:

- selector: '@xm-ngx/components/sidebar-menu'
        config:
          categories:
            administration:
              name:
                en: 'Administration'
                uk: 'Адміністрування'
              icon: 'settings'
              order: 100000
              dataQa: 'settings-menu-category'

Dashboard config example:

{
  "name": {
    "en": "Dashboards",
    "uk": "Дашборди"
  },
  "orderIndex": 1,
  "categoryKey": "administration",
  "slug": "path-to-your-page"
}