Refactor using Tauri (#278)

crates/gpapi/src/utils/shutdown_signal.rs

@@ -0,0 +1,22 @@
+use tokio::signal;
+
+pub async fn shutdown_signal() {
+  let ctrl_c = async {
+    signal::ctrl_c()
+      .await
+      .expect("failed to install Ctrl+C handler");
+  };
+
+  #[cfg(unix)]
+  let terminate = async {
+    signal::unix::signal(signal::unix::SignalKind::terminate())
+      .expect("failed to install signal handler")
+      .recv()
+      .await;
+  };
+
+  tokio::select! {
+      _ = ctrl_c => {},
+      _ = terminate => {},
+  }
+}