ci: add publish.yml

[calebdw]

This adds a ci job to automatically publish to crates.io when a tag is pushed

Note

You will need to crate an api token on crates.io and add it as a secret named CARGO_REGISTRY_TOKEN

Reference: https://fassbender.dev/blog/001-cargo-publish-action/

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.46%. Comparing base (4b5ad0c) to head (e0ff399).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #114   +/-   ##
=======================================
  Coverage   86.45%   86.46%           
=======================================
  Files         172      172           
  Lines      109526   109526           
=======================================
+ Hits        94694    94702    +8     
+ Misses      14832    14824    -8     

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