Add a way to delete all checked items

[nicofrand]

Hi,

first of all, many thanks for the app!

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

This is a feature request.
I mainly use the app to maintain lists (groceries, todo lists, etc.).
I'd like a way to quickly delete all the checked items.

Describe the solution you'd like

In the 3 dots menu, add an action "Delete all checked items from lists". When clicked, every item in a list, that is checked, is deleted.