feat(services): add signaldctl on compute01

Signed-off-by: Ryan Lahfa <ryan@dgnum.eu>

machines/compute01/signald.nix

@@ -1,7 +1,9 @@
-{ ... }: {
+{ pkgs, ... }:
+{
   # Ask Ryan for administration
   # as he's using one of his N phone numbers for the registration.
   services.signald = {
     enable = true;
   };
+  environment.systemPackages = [ pkgs.signaldctl ];
 }