Alpine Linux package

I've been working on packaging Authentik for Alpine Linux since last winter. For the most part, it's been for my own application. I've since worked on perfecting it, and I've opened an MR to get the aport up [here](https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/56279). I'm aware that the only supported distribution of authentik is via Docker and Helm, but I never the less wanted to open this issue to see if there was any interest from upstream for a package like this.