Theme support

[brifordwylie]

Pull Request Checklist

Thank you for contributing to the SuperCowPowers SageWorks project. Please make sure you've completed the following tasks before submitting your pull request:

GENERAL

• [ ] I've read the CONTRIBUTING document.
• [ ] I've merged 'main' into my PR branch (like today's main)

TESTING (run 'tox' for local testing)

• [ ] I've added tests to cover my changes
• [ ] black/flake8 linter tests passed
• [ ] 100% of the tests passed

UI (Web Interface/Components)

• [ ] I've run sageworks/applications/aws_dashboard/dashboard
• [ ] I've tested the UI and scanned the log output for any issues

DOCUMENTATION

• [ ] I've updated the documentation accordingly

REVIEW

• [ ] I've added (or will add) a reviewer to the PR
• [ ] I'll address any comments/request from reviewer
• [ ] I will delete the branch after the PR is merged

Notes

An SCP Developer/reviewer may make direct changes to your branch. A follow up issue might be created or asked for. Branches are empheral, they should/will be deleted after the PR is merged. Do not reuse an old branch, if a change needs to be made pull a new branch off of main.

Description of Changes