bi-directional filters between list - content - tag

[aisbergde]

implement bi-directional filters between

• list filter and data window
• tag filter and data window

filter the left side filter lists (lists and tasks) by content in the main window.

Example:

• from the list filter I select some items

• the list filter is applied in the main window

• in the tag filter only tags are shown used in the main window

• from the tag filter I select some items

• the tag filter is applied in the main window

• in the list filter only tags are shown used in the main window

is this the right place here or should this be a new feature request issue?

Originally posted by @aisbergde in https://github.com/mpcjanssen/simpletask-android/issues/1028#issuecomment-634846815