Merge pull request #1378 from QuickBlox/4.12.0-chat-swift-sample

4.12.0-chat-swift-sample

Merge pull request #1379 from QuickBlox/4.12.0-chat-objc-sample

4.12.0-chat-objc-sample

Merge pull request #1377 from QuickBlox/2.21.0

QuickBlox iOS SDK 2.21.0

WebRTCv3.1.0

#### Added:  
- Mac Catalyst support.  
- Simulators support.  
- iOS 13 support.  

#### Updated:  
- Google WebRTC updated to version 124.0.6367.88.  
- Logger enhanced for more effective logging.  
- Conference signaling mechanism improved.  
- RTC interfaces encapsulated for better modularity.  
- Camera capture queue and video capture logic optimized.  
- Media stream functionalities updated.  
- Audio track handling refactored.  

#### Deprecated:  
- Methods and classes related to call recording.  

#### Fixed:  
- Adjusted logging level settings, replacing assertions with validations.  
- Removed deprecated audio session logic.  
- Resolved inconsistencies in video frame handling.  

#### Minor Enhancements:  
- Improved compatibility and support with CocoaPods.

Quickblox SDK 2.20.0 (#1373)

* QuickBlox iOS SDK 2.20.0

Added:
- AI Translate
- AI Answer Assist
- Mac Catalyst support

* Update LICENSE format

* LICENSE

* Update README.md

* Update Quickblox_LICENSE.md

Merge pull request #1369 from QuickBlox/Release-UIKit-Sample-1.1.3

Release UIKit-Sample 1.1.3

Merge pull request #1368 from QuickBlox/Release-UIKit-Sample-1.1.2

Release-UIKit-Sample-1.1.2

Merge pull request #1367 from QuickBlox/Release-UIKit-Sample-1.1.1

Release UIKit Sample 1.1.0

Merge pull request #1366 from QuickBlox/develop

Release UIKit Sample 1.1.0

Merge pull request #1364 from QuickBlox/Release-UIKit-Sample-1.0.7

Release UIKit Sample 1.0.7