Add Instructions on How to Use Workflows in Contributing.md

[ArielSAdamsNASA]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I reviewed the cFS README.md file to see if the feature is in the major future work.
• I performed a cursory search to see if the feature request is relevant, not redundant, nor in conflict with other tickets.

Is your feature request related to a problem? Please describe.
Users may not know how to use our GitHub Actions Workflows.

Describe the solution you'd like
Add instructions on how to use our Github Actions Workflows under Writing High Quality Code. Instructions includes where workflows can be found, how to analyze or interpret results, how to run and configure workflows. Provide links for additional information on each workflow.

Describe alternatives you've considered
This can be added in a new section.

Additional context
Reference: https://docs.github.com/en/actions/quickstart
Example: https://github.com/TommyLin/focus-stacking/wiki/Github-Actions

Requester Info
Ariel Adams, ASRC Federal