feat(home): add power configuration to plasma

home/modules/plasma/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 {
   programs.firefox = {
     nativeMessagingHosts = [ pkgs.plasma-browser-integration ];
@@ -26,6 +26,16 @@
       naturalScroll = true;
     }];
 
+    powerdevil = let
+      settings = {
+        powerButtonAction = "sleep";
+      };
+
+      modes = [ "AC" "battery" "lowBattery" ];
+    in lib.mergeAttrsList (
+      map (m: { "${m}" = settings; }) modes
+    );
+
     kwin.edgeBarrier = 0;
     workspace = {
       clickItemTo = "open";