Slots for custom header

[brunotutrut]

Is your feature request related to a problem? Please describe.
Hi, i need to hide the datepicker (red line) and change the dropdown for modes (blue line) for a inline toggle.

Describe the solution you'd like
It's need to create props to hide this elements and scoped slots (exposing the function to change modes) for user can customize the layout more

Additional context
I'll appreciate if can expose the function to change modes in the component accesing by ref the component.

<qalendar ref="calendar" />

...
const qalendar = ref(null);
qalendar.value.changeMode('month');