NixOS system flake for the Netsoc server

Set up user for Aleks #2

Merged aleksmt.tngl.sh
targeting trunk from aleksmt.tngl.sh/netsoc-nixos:trunk
Merged opened by and assigned to aleksmt.tngl.sh
targeting trunk from aleksmt.tngl.sh/netsoc-nixos:trunk
Commits 1

Set up user for Aleks