webrtc: print lost packets

[aler9]

No description provided.

[codecov]

Codecov Report

Merging #2468 (c3fc7db) into main (34cdef1) will increase coverage by 0.00%.
Report is 4 commits behind head on main.
The diff coverage is 55.55%.

@@           Coverage Diff           @@
##             main    #2468   +/-   ##
=======================================
  Coverage   61.91%   61.91%           
=======================================
  Files         129      129           
  Lines       14540    14546    +6     
=======================================
+ Hits         9002     9006    +4     
- Misses       4870     4871    +1     
- Partials      668      669    +1     

Files	Coverage Δ
internal/core/webrtc_session.go	72.25% <100.00%> (ø)
internal/core/webrtc_source.go	50.44% <100.00%> (ø)
internal/core/webrtc_incoming_track.go	61.38% <42.85%> (-1.78%)	⬇️

... and 1 file with indirect coverage changes

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