webrtc: support reading G711 16khz tracks (#2848)

[aler9]

Fixes #2848

[codecov]

Codecov Report

Attention: Patch coverage is 72.89720% with 29 lines in your changes missing coverage. Please review.

Project coverage is 56.16%. Comparing base (427fea3) to head (4c8d0be).

Files	Patch %	Lines
internal/servers/webrtc/session.go	67.14%	15 Missing and 8 partials ⚠️
internal/protocols/webrtc/outgoing_track.go	83.78%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3445      +/-   ##
==========================================
+ Coverage   56.12%   56.16%   +0.04%     
==========================================
  Files         190      190              
  Lines       18962    19044      +82     
==========================================
+ Hits        10642    10696      +54     
- Misses       7506     7525      +19     
- Partials      814      823       +9     

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[github-actions]

This issue is mentioned in release v1.8.3 🚀
Check out the entire changelog by clicking here