fix(yt-dl): validate audio url and add retry logic

[ReenigneArcher]

Description

After merging #481 there are issues with YouTube urls.

It seems the urls provided by youtube are inaccessible due to 403 errors. When these are sent to Plex, a 406 response is given. See ytdl-org/youtube-dl#32882 for more info.

• Some retry logic was added.
• Improved unit tests.

Screenshot

Issues Fixed or Closed

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[codecov]

Codecov Report

Attention: Patch coverage is 31.66667% with 41 lines in your changes missing coverage. Please review.

Project coverage is 69.55%. Comparing base (29d0e8e) to head (e71e641).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
Contents/Code/youtube_dl_helper.py	32.20%	40 Missing ⚠️
Contents/Code/plex_api_helper.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #486      +/-   ##
==========================================
+ Coverage   67.98%   69.55%   +1.56%     
==========================================
  Files          12       12              
  Lines        1087     1120      +33     
==========================================
+ Hits          739      779      +40     
+ Misses        348      341       -7     

Flag	Coverage Δ
Linux	68.92% <31.66%> (+0.94%)	⬆️
Windows	68.92% <31.66%> (+0.94%)	⬆️
macOS	69.55% <31.66%> (+1.56%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
Contents/Code/default_prefs.py	100.00% <ø> (ø)
Contents/Code/plex_api_helper.py	55.15% <0.00%> (+6.06%)	⬆️
Contents/Code/youtube_dl_helper.py	39.25% <32.20%> (-2.64%)	⬇️

... and 3 files with indirect coverage changes

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

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

See analysis details on SonarCloud