Merge pull request 'Run statix' (!54) from statix into main

Reviewed-on: Drift/pvv-nixos-config#54
Reviewed-by: Daniel Lovbrotte Olsen <danio@pvv.ntnu.no>

shell.nix

@@ -3,6 +3,7 @@ pkgs.mkShellNoCC {
   packages = with pkgs; [
     sops
     gnupg
+    statix
     openstackclient
   ];