Lock inventory slots from leaving (e.g when ctrl+clicking)

[Nis_0]

Hey!

Quick request on something that bothered me quite a lot recently. I think an additional option to lock an inventory slot (not item-type locking) could be nice, disallowing the item in said slot to leave inventory by any automatic methods such as ctrl+clicking (and maybe even auto-trash).

This is useful for instances when you want to quickly unload your entire inventory, except for certain key items such as blueprint books, deconstruction planners, robots, etc.

Thanks,
Nis_0