feat: add AUR package and CI publishing

[mmahut]

Fixes #473

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2. Have you lint your code locally before submission?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Flag	Coverage Δ
unittests	93.40% <ø> (+0.04%)	⬆️

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see 4 files with indirect coverage changes

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[sadsfae]

I don't think we want package created for anything other than master branch.

[mmahut]

@sadsfae this is just to build the package, the release is only when a Github release happens. But maybe development is too much? We can scale it down to just master.