Respect NNN_TRASH in .nmv

[KlzXS]

In response to #1292 (comment)

I'm not familiar with the functioning of the trash programs so I don't know if any flags are needed.
rm has an interactive flag, but since trashing doesn't automatically delete files I take it that isn't even needed.

[N-R-K]

trash-put doesn't need any flags, idk about gio trash. Also should we grep through all the plugins to see if there's any other plugin where it makes sense to respect NNN_TRASH ?

[KlzXS]

NNN_TRASH isn't used anywhere else.
dups removes files. But it removes identical files, what's the point in putting it in the trash if you have an identical copy elsewhere? Most other result of grep rm are tmpfile removals.

[jarun]

Thank you!