🌐 Federated pre-requirement 🏗️ - Overview

[nickvergessen]

• https://github.com/nextcloud/spreed/issues/11269
• https://github.com/nextcloud/spreed/issues/11268
• https://github.com/nextcloud/talk-android/issues/3526
• https://github.com/nextcloud/talk-ios/issues/1460

[nickvergessen]

All issues closed, closing the overview