Improve HEVC codec handling in transcoding profiles

[peterlodri92]

This PR refines the logic for handling HEVC codec preferences in transcoding profiles, ensuring more consistent and codec selection.
Fixes #893

Changes

• Restructured the codec selection process for transcoding video
• Ensured HEVC is only added once to the codec list
• Implemented logic to prioritize HEVC when it's the preferred codec
• Tests for the get_transcoding methods

Details

The codec list is now handled as follows:

1. Initially populated with ["h264", "mpeg4", "mpeg2video", "vc1"]
2. If settings("transcode_h265.bool") is False, "hevc" is added to the list
3. If settings("videoPreferredCodec") is "H265/HEVC":
   • Checks if "hevc" is in the list
   • Removes it if present
   • Inserts it at the beginning of the list

This ensures that:

• HEVC is only added once to the codec list
• HEVC is prioritized when it's the preferred codec

Additional Notes

• Added tests to verify the new codec selection logic

Fixes #893

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 21.86%. Comparing base (62a1de7) to head (9eb9cd1).
Report is 30 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #895      +/-   ##
==========================================
+ Coverage   21.50%   21.86%   +0.36%     
==========================================
  Files          63       63              
  Lines        8632     8630       -2     
  Branches     1585     1585              
==========================================
+ Hits         1856     1887      +31     
+ Misses       6755     6724      -31     
+ Partials       21       19       -2     

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[oddstr13]

Please refer to my earlier comments around the tests.

Fixed

[sonarcloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud