feat: add control center widget

widgets/control-center/sliding-controls.tsx

@@ -0,0 +1,39 @@
+import { createBinding } from "ags";
+import { Gtk } from "ags/gtk4";
+import AstalWp from "gi://AstalWp";
+
+export const SlidingControls = () => {
+  const { VERTICAL } = Gtk.Orientation;
+
+  const { defaultSpeaker: speaker, defaultMicrophone: microphone } =
+    AstalWp.get_default()!;
+
+  const speakerIsMuted = createBinding(speaker, "mute");
+
+  return (
+    <box spacing={20} cssClasses={["pill"]} orientation={VERTICAL}>
+      <box cssClasses={["volume"]} spacing={20}>
+        <image
+          iconName={speakerIsMuted((val) =>
+            val ? "fa-speaker-muted-symbolic" : "fa-speaker-symbolic",
+          )}
+        />
+
+        <slider
+          hexpand
+          onChangeValue={({ value }) => speaker.set_volume(value)}
+          value={createBinding(speaker, "volume")}
+        />
+      </box>
+
+      <box cssClasses={["volume"]} spacing={20}>
+        <image iconName="fa-microphone-symbolic" />
+        <slider
+          hexpand
+          onChangeValue={({ value }) => microphone.set_volume(value)}
+          value={createBinding(microphone, "volume")}
+        />
+      </box>
+    </box>
+  );
+};