Feature Request GUI: Select + hide/unhide multiple values +unhide all

[momentmal]

There already was implemented a nice MR with a feature which remembers the collapsed nodes (making the ability to hide a complete node kind of not needed anymore)

However, for a node that i want to keep open because it contains an interesting value, hiding all the other values uninteresting for me is a pain, as there is no functionality to select multiple entries with ctrl or shift, only individual entries can be selected and hidden one by one.

Therefore I'd suggest adding the ability to select multiple entries + hide/unhide the selected entries at once.

Also, for when having hidden a lot of entries, a "unhide all" function would be very helpful, too.