TabMenu: Tab selection is not actionable due to missing output

[sbarfurth]

Describe the feature you would like to see added

The TabMenu component does not expose any events or observables. This makes the tab selection fully opaque from the outside. When the active tab is changed within the component, the parent component does not know this. The only way to handle tab changes currently is the usage of the command property on the MenuItem but this seems cumbersome. It would be great if the TabMenu could simply emit an event when a tab is selected.

Is your feature request related to a problem?

When trying to wrap the tab menu it is impossible to keep track of the selected tab in the wrapper component without using complex change detection and patching the command property on the menu items. This is frustrating considering the only missing piece is a single event.

Describe the solution you'd like

Whenever a tab is selected an event is emitted with the MenuItem that was selected. Ideally this event also allows for two-way binding on the activeItem input (https://angular.io/guide/two-way-binding).

Describe alternatives you have considered

No response

Additional context

No response