ci: adds workflow that calls composite action for docs sync

[lukegalbraithrussell]

Summary

Composite action PR isn't merged yet though

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.85%. Comparing base (d07fadf) to head (fb42aae).
Report is 24 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #426   +/-   ##
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  Coverage   99.85%   99.85%           
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  Files           7        7           
  Lines         702      702           
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  Hits          701      701           
  Misses          1        1           

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[zimeg]

@lukegalbraithrussell Following some discussion elsewhere I'm requesting changes here to prefer a reusable workflow.

These are both new and interesting to me and I hope promising for the changes being made 👾

Please know I am excited for this to make it to main and don't mean to be a blocker!

[zimeg]

🤯 Using a composite action from the upstream repo checked out above is fascinating!

With the secrets needed for this workflow to work, we might want to change this to a reusable workflow instead. Reference.

This should let use the same or similar steps here and elsewhere I hope, but I am so open to testing this more somehow soon 🚀

[lukegalbraithrussell]

closing this because we have better ideas for syncing