Return playlists and channels from pytube's search

[HeitorRaimundoPrado]

Is your feature request related to a problem? Please describe. Pytube currently doesn't implement support for searching things such as playlists or channels, only YouTube objects that represent videos

Describe the solution you'd like It would be nice if pytube's Search could return those other things, namely Playlist and Channel objects in a simple manner the same way it does for videos

Describe alternatives you've considered N/A

Additional context Implementing a Search method with those functionalities pytube would basically return an identical search to youtube's real search engine, with all the relevant results

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[NeonLightning]

i'd really like the playlists search too.