Finish independent macOS version

SFM.System/IndependentApplicationDelegate.swift

@@ -0,0 +1,19 @@
+import AppKit
+import Foundation
+import Library
+import MacLibrary
+
+class IndependentApplicationDelegate: ApplicationDelegate {
+    public func applicationWillFinishLaunching(_: Notification) {
+        Variant.useSystemExtension = true
+        Task.detached {
+            if await SystemExtension.isInstalled() {
+                if let result = try await SystemExtension.install() {
+                    if result == .willCompleteAfterReboot {
+                        return
+                    }
+                }
+            }
+        }
+    }
+}