feat: add bindings for the switcheroo dbus service

switcheroo-control/examples/switcheroo.rs

@@ -0,0 +1,12 @@
+#[tokio::main]
+async fn main() -> zbus::Result<()> {
+	let connection = zbus::Connection::system().await?;
+
+	let proxy = switcheroo_control::SwitcherooControlProxy::new(&connection).await?;
+
+	println!("GPUs: {:?}", proxy.get_gpus().await?);
+	println!("HasDualGpu: {}", proxy.has_dual_gpu().await?);
+	println!("NumGPUs: {}", proxy.num_gpus().await?);
+
+	Ok(())
+}