Feature add: An Official NixOS Flake Implementation for Alby Hub

Hello Everyone at Alby!

I think it would be great if Alby Hub had a NixOS Flake Implementation (packages and modules).

Just like LNBits does with their project.
https://github.com/lnbits/lnbits

What are the teams thoughts on this?

I also started a Matrix chat regarding this topic here:
https://matrix.to/#/#New_Features_Ideas_Devs:anarchyislove.xyz.

Thanks so much!

The issue mentions no repository files, tests, or entry points. Start by reviewing the requested NixOS flake packages and modules and comparing the LNBits project linked in the issue. Done would mean an agreed scope and an official Alby Hub NixOS flake implementation.

Written by the indexing model from the issue text.