Add FEC to SDP parsing

[bfrolikov]

Description

Add FEC to protos currently registered with IANA list

Reference issue

Fixes #241

[JoTurk]

Thank you

[bfrolikov]

@JoTurk could you please approve the workflows when you have the time?
UPD: Thanks!

[philipch07]

@bfrolikov I have just approved the workflows

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.43%. Comparing base (ac4d006) to head (1a3a691).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #242   +/-   ##
=======================================
  Coverage   97.43%   97.43%           
=======================================
  Files          12       12           
  Lines        1404     1405    +1     
=======================================
+ Hits         1368     1369    +1     
  Misses         19       19           
  Partials       17       17           

Flag	Coverage Δ
go	97.43% <100.00%> (+<0.01%)	⬆️

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[philipch07]

Seems good to merge! @bfrolikov

[JoTurk]

Thank you, I'm going to merge this tomorrow and few other changes, and we'll issue a tag for pion/sdp. I'll leave this open so we don't forget.

[bfrolikov]

Hey! Just checking in in case you've forgotten about this one. No worries if you've got other stuff lined up first @JoTurk