Search for next/previous occurrence without filtering the whole file

[DidierLoiseau]

Quite often, it is useful to quickly find the next/previous occurrence of some text, be it in the search results or in the inline.

Currently, this requires to filter the whole file again, and try to find back the corresponding line numbers. For big files, this is very slow – and it won't work at all if the number of matches is more than 50k. Additionally, it makes it very difficult to combine the first result with the second one.

[codehunter13]

+1