Due to [an issue][1] with the `actions/upload-artifact` action, when
binaries are uploaded they lose permission bits and `xattr` properties.
Composite actions `upload-tar` and `download-tar` have been added that
tarball the artifacts before uploading them to retain those properties.
[1]: https://github.com/actions/upload-artifact/issues/38
Changelog:
- Sign & notarize Recyclarr on macOS platforms (arm64, x64)
- Use `tar.xz` instead of `zip` on mac & linux platforms
- Compile linux binaries on the ubuntu-latest Github runner
- Compile macOS binaries on the macos-latest Github runner
- Executable size reduced by disabling ReadyToRun
Fixes#39