Add basic properties to lock view controller

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>

shell_integration/MacOSX/NextcloudIntegration/FileProviderUIExt/DocumentActionViewController.swift

@@ -40,9 +40,9 @@ class DocumentActionViewController: FPUIActionExtensionViewController {
         case "com.nextcloud.desktopclient.FileProviderUIExt.ShareAction":
             prepare(childViewController: ShareViewController(itemIdentifiers))
         case "com.nextcloud.desktopclient.FileProviderUIExt.LockFileAction":
-            prepare(childViewController: LockViewController(itemIdentifiers))
+            prepare(childViewController: LockViewController(itemIdentifiers, locking: true))
         case "com.nextcloud.desktopclient.FileProviderUIExt.UnlockFileAction":
-            prepare(childViewController: LockViewController(itemIdentifiers))
+            prepare(childViewController: LockViewController(itemIdentifiers, locking: false))
         default:
             return
         }

shell_integration/MacOSX/NextcloudIntegration/FileProviderUIExt/Locking/LockViewController.swift

@@ -12,5 +12,16 @@ import OSLog
 import QuickLookThumbnailing
 
 class LockViewController: NSViewController {
+    let itemIdentifiers: [NSFileProviderItemIdentifier]
+    let locking: Bool
 
+    init(_ itemIdentifiers: [NSFileProviderItemIdentifier], locking: Bool) {
+        self.itemIdentifiers = itemIdentifiers
+        self.locking = locking
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
 }