Create a workflow for a burndown chart

[cbaxley]

🗣 Description

💭 Create a central workflow for making burndown charts.

🧪 Testing

Run the test and see if the bundown chart is created.

✅ Pre-approval checklist

• [ ] Changes are limited to a single goal AND the title reflects this in a clear human readable format
• [ ] Issue that this PR solves has been selected in the Development section
• [ ] I have read and agree to LME's CONTRIBUTING.md document.
• [ ] The PR adheres to LME's requirements in RELEASES.md
• [ ] These code changes follow cisagov code standards.
• [ ] All relevant repo and/or project documentation has been updated to reflect the changes in this PR.

✅ Pre-merge Checklist

• [ ] All tests pass
• [ ] PR has been tested and the documentation for testing is above
• [ ] Squash and merge all commits into one PR level commit