rtmp: support Extended Metadata Frames (#4006) (#4014)

[aler9]

Fixes #4006
Fixes #4014

[codecov]

Codecov Report

Attention: Patch coverage is 84.46602% with 32 lines in your changes missing coverage. Please review.

Project coverage is 56.04%. Comparing base (82409e2) to head (1138a21).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/protocols/rtmp/amf0/data.go	87.50%	14 Missing and 6 partials ⚠️
...ternal/protocols/rtmp/message/extended_metadata.go	74.35%	6 Missing and 4 partials ⚠️
...ls/rtmp/message/extended_mpeg2ts_sequence_start.go	0.00%	1 Missing ⚠️
...al/protocols/rtmp/message/extended_sequence_end.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4018      +/-   ##
==========================================
+ Coverage   55.95%   56.04%   +0.09%     
==========================================
  Files         194      193       -1     
  Lines       19652    19693      +41     
==========================================
+ Hits        10996    11037      +41     
+ Misses       7815     7810       -5     
- Partials      841      846       +5     

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[github-actions]

This issue is mentioned in release v1.11.0 🚀
Check out the entire changelog by clicking here