Follow Up to systemd secrets

Since I wrote https://blog.foitzik.dev/GitOps%20with%20systemd%20secrets.html I tinkered on a small helper crate to make this even easier to consume.

The result is here https://github.com/daemonfire300/systemd-creds-rs. The motivation is arguably thin. The idea was to integrate this with secretspec, but I did not get around to doing that.

I am no longer in need of that helper though, because I switched to sops/agenix and it is just vastly more convenient in my opinion and not tied to solely systemd.