Filter-out non-public videos and properly cleanup unsuccessful videos

[benoit74]

Fix #362

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 1.50%. Comparing base (46c1d3c) to head (326187d).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
scraper/src/youtube2zim/scraper.py	0.00%	4 Missing ⚠️
scraper/src/youtube2zim/youtube.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main    #363      +/-   ##
========================================
- Coverage   1.50%   1.50%   -0.01%     
========================================
  Files         11      11              
  Lines       1130    1132       +2     
  Branches     171     171              
========================================
  Hits          17      17              
- Misses      1113    1115       +2     

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[benoit74]

@rgaudin up :) (looks like it slipped your notifications ^^)