Let SelectDestination participant reuse a Card object parsed by a previous participant.

[alcarraz]

Bringing the discussion from slack so it doesn't get lost.

At least two participants that parse a Card. SelectDestination and CheckFields and maybe we can let SelectDestination to reuse the one from CheckFields if present in the context.

I was planning to make an issue and PR for this if you think that would be interesting. SelectDestination would have a property like use-card (or a much better name that I'm sure someone would come up with) that, if not null, will check if already present in the context, so we don't have to parse it twice.

I wonder if we want that to be ContexConstants.CARD by default, or null for a stricter backward compatibility. I'm leaning toward the former, if there is an object in the context, with key CARD, and it is an instance of Card it most probably (>99%) is the transaction's card.