Support more data from webrtc stats

[aalekseevx]

Description

Parse more webrtc stats according to https://www.w3.org/TR/webrtc-stats/

[codecov]

Codecov Report

Attention: Patch coverage is 53.33333% with 14 lines in your changes missing coverage. Please review.

Project coverage is 79.12%. Comparing base (5637661) to head (dccfbb2).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
icetransportstate.go	53.33%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2916      +/-   ##
==========================================
+ Coverage   78.99%   79.12%   +0.12%     
==========================================
  Files          89       89              
  Lines        8541     8564      +23     
==========================================
+ Hits         6747     6776      +29     
+ Misses       1303     1302       -1     
+ Partials      491      486       -5     

Flag	Coverage Δ
go	80.68% <53.33%> (+0.13%)	⬆️
wasm	64.47% <23.33%> (-0.46%)	⬇️

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[Sean-Der]

LGTM! Mind fixing the lints and good to merge :)

[aalekseevx]

@Sean-Der, I think he's happy now 👍