implement "pickit"

[louis030195]

so we're able to define what we want the bot to take and not take
maybe would be nice with web interface with images, drag'n drop ...

[louis030195]

first idea (to improve)
6e67fba

take inspiration on (and improve it)
https://github.com/kolton/d2bot-with-kolbot/blob/master/d2bs/kolbot/pickit/classic.nip