Personal NixOS config

Base on nix-starter-configs.

To Fix

• nextcloudcmd netrc parse not working
• autotimezone failed due to geoclue2 not working in nixpkgs (Workaround sudo timedatectl set-timezone EST).
• steam-run libGL: Can't open configuration file /etc/drirc

No-reproducibility Hack

• VSCodium FHS
• onlyoffice fonts