added voltage in battery menu

widget/menus/BatteryMenu/BatteryMenu.tsx

@@ -1,7 +1,7 @@
 import { Astal, App, Gtk } from "astal/gtk3";
 import Battery from "gi://AstalBattery";
 import { bind, Variable } from "astal";
-import {cycles_count, health} from "./helpers.ts";
+import { cycles_count, health, voltage } from "./helpers.ts";
 
 const BatteryMenu = () => {
   const { TOP, RIGHT } = Astal.WindowAnchor;
@@ -9,7 +9,8 @@ const BatteryMenu = () => {
   const bat = Battery.get_default();
   const batcycles = Variable<string>("").poll(5000, () => cycles_count());
   const bathealth = Variable<string>("").poll(5000, () => health());
-  
+  const batvoltage = Variable<string>("").poll(5000, () => voltage());
+
   return (
     <window
       anchor={TOP | RIGHT}
@@ -80,7 +81,7 @@ const BatteryMenu = () => {
               halign={START}
               label="Voltage:"
             />
-            <label hexpand halign={END} label="12.1 V" />
+            <label hexpand halign={END} label={batvoltage()} />
           </box>
         </box>
       </box>