✨ Use concurrency for updater

phpmon-updater/Alert.swift

@@ -0,0 +1,29 @@
+//
+//  Alert.swift
+//  PHP Monitor Self-Updater
+//
+//  Created by Nico Verbruggen on 02/02/2023.
+//  Copyright © 2023 Nico Verbruggen. All rights reserved.
+//
+
+import Foundation
+import Cocoa
+
+class Alert {
+    public static func show(description: String, shouldExit: Bool = true) async {
+        await withUnsafeContinuation { continuation in
+            DispatchQueue.main.async {
+                let alert = NSAlert()
+                alert.messageText = "The app could not be updated."
+                alert.informativeText = description
+                alert.addButton(withTitle: "OK")
+                alert.alertStyle = .critical
+                alert.runModal()
+                if shouldExit {
+                    exit(0)
+                }
+                continuation.resume()
+            }
+        }
+    }
+}