add StrEnum package

[hyberdk]

fix tests

Description
A clear and concise description of why this change is necessary.

Fixes # (issue)

Changes
Include a brief summary of changes...

• change 1
• change 2
• change 3

Screenshots
If it's a UI change add screenshots to demonstrate changes.

Checklist

• Pull request is limited to a single purpose
• Code style/formatting is consistent
• All existing tests are passing
• Added new tests related to change
• No unnecessary whitespace changes

Collaboration
When a user creates a pull request from a fork that they own, the user
generally has the authority to decide if other users can commit to the
pull request's compare branch. If the pull request author wants greater
collaboration, they can grant maintainers of the upstream repository
(that is, anyone with push access to the upstream repository) permission
to commit to the pull request's compare branch

See https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/allowing-changes-to-a-pull-request-branch-created-from-a-fork

[satterly]

👍