Add CodeQL

[martincostello]

• Add a workflow to run CodeQL.
• Add setup-node to build.

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.19%. Comparing base (51b19f5) to head (fcb74a4).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1143   +/-   ##
=======================================
  Coverage   92.19%   92.19%           
=======================================
  Files          18       18           
  Lines         282      282           
  Branches       22       22           
=======================================
  Hits          260      260           
  Misses         14       14           
  Partials        8        8           

Flag	Coverage Δ
linux	92.19% <ø> (ø)
macos	92.19% <ø> (ø)
windows	92.19% <ø> (ø)

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