Icon for Custom Setting menu item

[Azaliusz]

Is your feature request related to a problem? Please describe.

I created a setting using Custom Settings and wanted to set the item icon in the menu that came with it, but I haven't found a solution so far.

Describe the solution you'd like

If a .Id(type.Name) were added to the builder in the CustomSettings/AdminMenu.BuildNavigationAsync method, the menu item could be overriden with a shape named NavigationItemText-NAME_OF_SETTINGS.Id.

Describe alternatives you've considered

[Piedone]

An AddClass() would be useful too.

[sebastienros]

In OrchardCore.CustomSettings.AdminMenu call something like AddClass(type.Classified()).Id(type.Classified) for each created item.