chore: add action for publishing alpha releases

[gregjopa]

This PR adds a new command for publishing alpha releases to npm.

npm run release-alpha

A new github action was added for running this command.

[codecov-commenter]

Codecov Report

Merging #8 (8acccbf) into main (3bf2489) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #8   +/-   ##
=======================================
  Coverage   81.74%   81.74%           
=======================================
  Files           3        3           
  Lines         126      126           
=======================================
  Hits          103      103           
  Misses         23       23           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3bf2489...8acccbf. Read the comment docs.