search: add more filtering options for results

[kultpro]

Thank you very much for a separate search page!

Now I dream of searching by specifying a specific directory and/or selecting certain tags. Is this possible in the future?

[McShelby]

The reason for a dedicated search page was exactly because of your request.

This means that in the future, I will expand search options on the dedicated search page. I still have to work out what options may be reasonable.

I am thinking of something like in the Hugo discussion forum

Consider #483: Sorting by page (menu) structure

[McShelby]

Take custom taxonomies into account when implementing.