feat: add cpu temp widget

widgets/bar/cpu.tsx

@@ -0,0 +1,15 @@
+import { bind, Variable } from "astal";
+
+export const CPU = () => {
+  const cpu = Variable("").poll(5000, [
+    "bash",
+    "-c",
+    "cat /sys/class/thermal/thermal_zone*/temp",
+  ]);
+
+  return (
+    <box cssClasses={["pill"]}>
+      <label label={bind(cpu).as((val) => `CPU: ${parseInt(val) / 1000} °C`)} />
+    </box>
+  );
+};

widgets/bar/index.tsx

@@ -6,6 +6,7 @@ import { Time } from "./time";
 import { Network } from "./network";
 import { Profile } from "./profile";
 import { GPU } from "./gpu";
+import { CPU } from "./cpu";
 
 export const WINDOW_NAME = "bar";
 
@@ -47,6 +48,7 @@ const End = () => {
   return (
     <box spacing={10}>
       <Network />
+      <CPU />
       <GPU />
       <Profile />
       <Tailscale />