Add screenshot and ntfy plugins; update keybinds

Disable the notify-client module on all hosts. Install hyprshot, enable
screenshot and ntfy‑notifications plugins, set screenshot mode to
region,
and add keybindings for these features. Introduce a restart‑noctalia
script and include it in the home scripts.

modules/home/scripts/default.nix

@@ -1,5 +1,6 @@
 {pkgs, ...}: {
   home.packages = [
     (import ./nvidia-offload.nix {inherit pkgs;})
+    (import ./restart-noctalia.nix {inherit pkgs;})
   ];
 }