[Feature idea] Lifehashes in stonewall change outputs

[4rkad]

Hi,

Adding lifehashes to Sparrow was a great feature.

I was thinking to add lifehashes in change outputs coming from a Stonewall. It would be easy to identify it to avoid join them in the next transactions.

In General, It could be applied to all the outputs that participated in the same transaction and that are available to spend on your wallet.