Add QA checks

[maxrake]

Add quality assurance checks.

• Ensure they are enforced during PRs
  • This can be done with a QA job within a workflow
• Consider adding pre-commit hooks to allow developers an easier way to confirm proper QA before creating a PR
• Some possible tools to use
  • markdownlint
  • Javascript linter
  • yamllint
  • actionlint
  • A spell checker of some sort
  • Others (this list is not exhaustive)
• Account for *.mdx files with one of the QA tools added here or a new/different one