Delete multiple subscriptions at once

[Brawl345]

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

I want to delete multiple subscriptions at once or delete them all at once.

Describe the solution you'd like

Maybe add some checkboxes to the subscriptions page with an option to select all and delete them?

How will you/everyone benefit from this feature?

I recently sorted out a lot of channels I don't follow anymore and I don't want to edit them in two places so I thought I could just delete them in the app and reimport but there is currently no function to do so.

[githupper]

I need the batch unsubscribing function as well.

I do not use NewPipe exclusively and sometimes I subscribe to new channels or unsubscribe from dormant channels regularly on various platforms such as iPad, nvidia Shield, iPhone etc.

Overtime Newpipe's subscription list becomes hard to manage as I need to browser the entire list to update it by removing or adding subscriptions.

Overwriting with new YouTube export does not help either as it appends and not overwrite the current subscription list in Newpipe.

As of right now Newpipe is my least used method of watching YouTube due to the subscription list always least accurate and relevant.

Please consider to allow mass deletion of subscription list or at least allow new import to overwrite current subscription list in Newpipe.

Thank you