add qemu & battery notifs

modules/home/services/poweralertd/default.nix

@@ -0,0 +1,17 @@
+{ config, lib, namespace, ... }:
+let
+  inherit (lib) mkIf;
+
+  cfg = config.${namespace}.services.poweralertd;
+in
+{
+  options.${namespace}.services.poweralertd = {
+    enable = lib.mkEnableOption "poweralertd";
+  };
+
+  config = mkIf cfg.enable {
+    services.poweralertd = {
+      enable = true;
+    };
+  };
+}