fix/api-audio: Resolve Non-WAV Audio Streaming Issue

[mbsantiago]

This PR fixes a bug in the audio streaming API that prevented it from working with non-WAV files (FLAC, MP3) after the soundevent library upgrade to v2.

Technical Details

• Problem: The existing audio streaming implementation relied on WAV-specific methods for extracting byte ranges from audio files. This caused failures when attempting to stream FLAC or MP3 files.
• Solution: The audio chunk reading logic has been refactored to use a format-agnostic approach, ensuring compatibility with all audio formats supported by soundevent.
• Testing: Unit tests have been added to verify correct streaming behavior for WAV, FLAC, and MP3 files.

[codecov]

Codecov Report

Attention: Patch coverage is 78.78788% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 59.82%. Comparing base (1872486) to head (f178807).

❗ Current head f178807 differs from pull request most recent head bf3d525

Please upload reports for the commit bf3d525 to get more accurate results.

Files	Patch %	Lines
back/src/whombat/api/audio.py	86.20%	4 Missing ⚠️
back/src/whombat/system/logging.py	33.33%	2 Missing ⚠️
back/src/whombat/routes/audio.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #18      +/-   ##
==========================================
- Coverage   59.83%   59.82%   -0.02%     
==========================================
  Files         171      171              
  Lines        7603     7596       -7     
==========================================
- Hits         4549     4544       -5     
+ Misses       3054     3052       -2     

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