Youtube gives us infinite loading screen sometimes when we scrap a playlist (did we trip a bot protection mechanism?)

[brilliant-ember]

as mentioned in #19
and could be related to #18

Sometimes youtube gives us an infinite loading spinner when we try to download dynamic content from a playlist and we don't detect that loading spinner (it's html class is circle and id is spinner-id as of today) and this causes us to exit the playlist prematurely and not scrape the remaining of the videos.

run ` python3 tests/functionality_testing/Scrapper_test.py -k "test_get_playlist_info" which passed normally, but fails when the issue happens (or a user updates their number of videos 😄 )