Merge pull request 'Add user frero' (!91) from add-user-frero into main

Reviewed-on: https://git.pvv.ntnu.no/Drift/pvv-nixos-config/pulls/91

users/frero.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+{
+  users.users.frero = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "drift" "nix-builder-users" ];
+    shell = pkgs.zsh;
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAII09JbtSUMurvmHpJ7TmUQctXpNVhjFYhoJ3+1ZITmMx"
+    ];
+  };
+}