Add subtitles/lyrics delay option

[ShinsuSenju]

Umm an option for lyrics delay would be fine so that we can manually sync the lyrics

[KRTirtho]

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This will not fix the issue of out of sync lyrics at all. We've to find a better way to implement Synced Lyrics for Spotube. Manually syncing lyrics is really tempting & will make the end user experience horribly poor