Allow custom filtering rules

[dit7ya]

Hi, thanks for this project.

I would like to see all the search filters together, but in a custom ordered manner. Like I want to see a search UI with three sections - Directory, Host, and Global. That way I don't have to cycle between the filter modes and can just start searching with minimal cognitive effort.

[iamkroot]

Maybe adding keybindings can solve this. https://github.com/m42e/zsh-histdb-fzf uses F1, F2, etc. as hotkeys for the different modes.