* - Adding checking for resource type in tag functions
- Adding TargetNotFoundException when no resource found
- Adding support for tags for root OU, OU and Policies
- Adding tests covering the new code
- Adding test for deletion of a tag
* fixed linting issue
* - renamed helper function to a more logical name
- added tests for helper function
- fixed bugs in tests for tag functions
Co-authored-by: Sjoerd Tromp <stromp@schubergphilis.com>