[Feature request] adding Playlist Length

[farzana840]

Checklist (Your issue will be automatically closed if you delete this part)

• I make sure that there are no existing issues - open or closed - which I could contribute my information to.
• I believe this feature request will benefit more than 10% of users, not just myself.

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** Description
(Start here)

A playlist length feature would be great addition. As someone who uses youtube for studies(and a lot of others do), it's very convenient to see the lecture playlist duration beforehand. New pipe has it and it's helpful. It's not urgent but it would be appreciated!!

[InfinityLoop1308]

Will be added in the next version.