* Add initial add attribute modal
* Add async select control component and add attribute terms
* Make use of AsyncSelectControl for attributes
* Rearranged the add attribute form to make removing easier
* Make sure add button is disabled if fields are empty
* Remove the use of AsyncSelectControl for now
* Add disabled option and fix merge conflict
* Add attribute modal tests
* Remove unused trigger drag
* Add popover slot
* Small update to select control and fix multi selection in term field
* Add tests for attribute and attribute term fields
* Add changelogs
* Small fix after merge conflict
* Fix some styling and issue with select control when clearing item
* Fix lint error
* Fix up some styling issues after rebase
* Fix formatting, some styling issues, and address some PR feedback
* And confirmation dialog for closing the modal.
louwie17