* feat: add audio transcoding support for WhatsApp Cloud API
- Introduced `Audio::TranscodeService` to handle audio transcoding to OGG/Opus format.
- Updated `Messages::MessageBuilder` to transcode audio attachments based on `transcode_audio` parameter.
- Enhanced `WhatsappCloudService` to normalize audio content types and send voice flag for recorded audio in OGG format.
- Added utility functions for audio conversion in JavaScript.
- Updated Dockerfile to include FFmpeg for audio processing.
- Added tests for audio transcoding and WhatsApp Cloud service interactions.
* feat: enhance audio handling with transcoding support and error management
* feat: improve audio transcoding error handling and enhance audio recording features
* feat: enhance audio transcoding process and error handling for better reliability
* feat: update recorded audio handling to support boolean and array formats
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