add MakeStringSetter; add github actions

[muir]

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[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (main@3c47691). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #1   +/-   ##
=======================================
  Coverage        ?   71.92%           
=======================================
  Files           ?        2           
  Lines           ?      114           
  Branches        ?        0           
=======================================
  Hits            ?       82           
  Misses          ?       20           
  Partials        ?       12           

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