QoL: item cooldowns in stash

[PiotrKaszuba]

Suggestion to display item cooldowns while in stash and horadric cube as currently they are shown only while held by towers. If player is planning to maximize usage of item ability while switching to other items - they have to bring the item to tower to check its cooldown and wait a few seconds or have already lost a few seconds of cooldown - which is annoying and inconvenient.