Release amazon-chime-sdk-2.28.0

Added

• Add compression support when sending and receiving sdp messages.

Changed

• Removed upward BWE throttling logic in VideoPriorityBasedPolicyConfig, which was increasing recovery time more then intended, whereas its main focus was towards slowing downturns in BWE when the network is actually stable. We may come back to configuring the recovery delay another time.

Fixed

• Fix a worker resource leak with BackgroundBlurProcessor and BackgroundReplacementProcessor.
• Clone the video preference input in chooseRemoteVideoSources API in VideoPriorityBasedPolicy to avoid mutation
  that can cause video preferences to not be sorted and lead to wrong video subscription determination by the policy.
• Fix a screen share issue by resetting the sdp compression state during join requests.