muxer: put EXT-X-MEDIA before EXT-X-STREAM

[aler9]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.85%. Comparing base (ef68587) to head (79ce9bd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #183   +/-   ##
=======================================
  Coverage   71.85%   71.85%           
=======================================
  Files          58       58           
  Lines        3922     3922           
=======================================
  Hits         2818     2818           
  Misses        912      912           
  Partials      192      192           

Flag	Coverage Δ
	71.85% <100.00%> (ø)

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