[BottomNavigationView] BottomNavigationView can have only one setOnNavigationItemSelectedListener

[AndrewBloom]

FEATURE REQUEST

As per title, BottomNavigationView can have only one setOnNavigationItemSelectedListener. This is annoying because if i use the
bottomNavigationView.setupWithNavController(navController)
this internally sets that listener, and i cannot use it anymore for anything else (like setting the text in a custom appBar, for example)
A list of listeners would be the right thing in my opinion.

Ps. this probably applies to setOnNavigationItemReselectedListener(BottomNavigationView.OnNavigationItemReselectedListener listener)
too.

For Pattern reference, see NavController addOnDestinationChangedListener and removeOnDestinationChangedListener

[kikasik]

Yes! It will be very useful

[UMFsimke]

@drchen is this something that is still on the roadmap? I would love to implement this as my first PR if possible

[imhappi]

@UMFsimke feel free!