[Notifications] Need a clear all notifications option #3006
* create new notifications indicator in vue, and sunset old one
* add notifications list overlay
* working notifications
* add support for progress notifications
* update percentage on mounted
* Markup cleanups in new Vue Notifications files
- Removed unneeded markup and class wrappers;
- Removed unneeded inline styling;
* remove example notifications
* fix lint errors
* make reviewer requested changes, remove old not needed files, add test
* update testTools to testUtils
Co-authored-by: charlesh88 <charlesh88@gmail.com>
