Add haskell-ci generated config, fix cabal warnings

[jhrcek]

Hello @Tritlo
it would be great to have a basic CI validation of this package and some confidence it keeps building with recent versions of GHC. To that end I:

• added github actions config generated by haskell-ci
• bumped all dependency bounds reported by cabal outdated
• fixed cabal check warnings (missing extra-source-files, inclusive upper bounds on some deps, upper bounds with trailing zeros)
• fixed all -Wunsused-packages warnings.

You can see for yourself that the CI is passing in my fork: jhrcek#1

[jhrcek]

If merged, this would supersede both #1 and #5

[Tritlo]

Hey! Thanks for the effort. I have an updated package that we're using internally, and I've gotten permission to open-source it, which will supercede this current package. Hopefully next week!

[jhrcek]

Nice, I'm looking forward to trying out the successor package.

In the meantime, I'm not sure what the future of this repo is (maybe you'll archive it once the new package is out), but I'd kindly ask you to either merge this PR or close it. Just trying to reduce the number of open PRs I have 😸

[jhrcek]

Hey @Tritlo! At the risk of being that person who shows up asking for free stuff 😅 any updates on the open-sourced version of the updated package you mentioned? I've been looking forward to trying it out. Totally understand if it's taking longer than expected, getting permission to open-source things is often the easy part.

[Tritlo]

Hey! Yes the focus has been on other areas recently. I'll take it up with them tomorrow and hopefully get some time to get it out the door soon.

[Tritlo]

ok, the updated package is ready to go. Should be ready for release on Monday!

[jhrcek]

Thank you, I really appreciate you working on this.