Selection of multiple tags to show only notes that contain all of the chosen tags

[andysayer]

Describe your feature request
FSNotes allows the selection of multiple tags by clicking on multiple tags in the sidebar whilst holding down the "cmd" button.

This filters the notes in an "any of" fashion. For example, if you have 3 notes:

note1 containing #tag1
note2 containing #tag2
note3 containing #tag1 and #tag2

and you select #tag1 and #tag2 from the sidebar, then this will show note1, note2 and note3, as they each contain any of #tag1 and #tag2

My proposal is to allow users the option (either in the settings, or through a keyboard shortcut e.g. "cmd" + "ctrl") to allow the selection of multiple tags in the sidebar to display only the notes that contain all of the selected tags.

e.g. selecting #tag1 and #tag2 from the sidebar, would show only note3, as it is the only note that contains all of #tag1 and #tag2

When using lots of notes that contain lots of tags, this would allow more flexibility in how notes are searched and filtered. An example of this feature in another application is in BibDesk 1.7.9.

Thanks!

Additional context
MacOS 10.14.6
FSNotes version 4.9.8

[glushchenko]

https://github.com/glushchenko/fsnotes/releases/tag/7.0.0b1