Migrate red/red

[naman9271]

Fixes #2637

Major Change

1. Added Metadata Support:

   • Implemented the getMetadata method in the newFrame object to comply with the RTCEncodedAudioFrame interface. This method returns an object containing contributingSources and synchronizationSource.

   const newFrame: RTCEncodedAudioFrame = {
       data: data.buffer, // Use the underlying ArrayBuffer
       timestamp: encodedFrame.timestamp,
       getMetadata: () => {
           return {
               contributingSources: [], // Provide appropriate values as needed
               synchronizationSource: undefined, // Provide appropriate values as needed
           };
       },
   };

2. Redundancy Handling Logic:

   • Enhanced the addRedundancy method to correctly handle the addition of redundancy to the audio frames. This includes calculating the necessary lengths and constructing the frame headers according to RFC 2198 specifications.

[jitsi-jenkins]

Hi, thanks for your contribution!
If you haven't already done so, could you please make sure you sign our CLA (https://jitsi.org/icla for individuals and https://jitsi.org/ccla for corporations)? We would unfortunately be unable to merge your patch unless we have that piece :(.

[naman9271]

@saghul Please Review this PR