Local search for lists (list of playlists, playlists, list of subscriptions, etc.)

[tsilvs]

Checklist

• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at CONTRIBUTING.md.
• This issue contains only one feature request. I will open one issue for every feature I want to request.

Describe the feature you want

Search bar in all the list UIs (preferably with filtration):

• list of playlists
• playlists
• list of subscriptions
• list of channel groups
• list of channels in a channel group
• etc.

Is your feature request related to a problem? Please describe it

I've created quite a lot of playlists and channel groups, and now it's hard to navigate.

How will you/everyone benefit from this feature?

It will be much more convenient to use subscriptions and playlists.

[SameenAhnaf]

Closing in favor of #3037 and #7926