f-breadcrumb should allow for dropdowns in each crumb item

[NikhilVerma]

Describe the solution you'd like

It will be really useful to the users if we could have dropdowns inside breadcrumbs. Here is a dribble example and a demo codepen implementation

Describe alternatives you've considered

f-breadcrumb doesn't allow embedding slots, or else I would have composed breadcrumb with another component. I can always create my own otherwise.

Additional context

There seems to be some support for dropdowns when the breadcrumb list is too big