Allow passing names of default codecs

[sgfn]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 86.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 88.29%. Comparing base (880099e) to head (dcdc052).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/ex_webrtc/peer_connection/configuration.ex	86.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #204      +/-   ##
==========================================
- Coverage   88.30%   88.29%   -0.01%     
==========================================
  Files          49       49              
  Lines        2549     2564      +15     
==========================================
+ Hits         2251     2264      +13     
- Misses        298      300       +2     

Files with missing lines	Coverage Δ
lib/ex_webrtc/peer_connection/configuration.ex	95.05% <86.66%> (-0.76%)	⬇️

... and 1 file with indirect coverage changes

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