Add FDA request dialog

Library/Network/ExtensionErrors.swift

@@ -0,0 +1,5 @@
+import Foundation
+
+public enum FullDiskAccessPermissionRequired: Error {
+    case error
+}

Library/Network/ExtensionProfile.swift

@@ -49,6 +49,11 @@ public class ExtensionProfile: ObservableObject {
         try await manager.saveToPreferences()
     }
 
+    @available(iOS 16.0, macOS 13.0, tvOS 17.0, *)
+    public func fetchLastDisconnectError() async throws {
+        try await connection.fetchLastDisconnectError()
+    }
+
     public func start() async throws {
         await fetchProfile()
         manager.isEnabled = true

Library/Network/ExtensionProvider.swift

@@ -32,6 +32,7 @@ open class ExtensionProvider: NEPacketTunnelProvider {
         LibboxRedirectStderr(FilePath.cacheDirectory.appendingPathComponent("stderr.log").relativePath, &error)
         if let error {
             writeFatalError("(packet-tunnel) redirect stderr error: \(error.localizedDescription)")
+            return
         }
 
         await LibboxSetMemoryLimit(!SharedPreferences.ignoreMemoryLimit.get())