Allows users to press `DELETE` on their keyboards to delete
an item from `<TagInput />`, which in turn is used by the
`Select` family of components.

Handling `DELETE` to remove item mimics the way `DELETE` works
in a text editor, where an user can delete from the beginning
of the line forward. Reaching the end of the line, in our
case passing the last selected item in `<TagInput />` will stop
deleting. Moving the selection to the first item and deleting
from that point onwards repeatedly will delete all the selected
items.

Co-Authored-By: Adi Dahiya <adi.dahiya14@gmail.com>