Add sent_and_received_txouts methods to SPK and Keychain TxOut indexes#2081

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notmandatory wants to merge 2 commits intobitcoindevkit:masterfrom

notmandatory:feat/send_recvd_txouts

Commits on Dec 10, 2025

feat(chain): add sent_and_received_txouts method to SPK and keychain indexes
notmandatory
committed

Commits on Dec 11, 2025

feat(chain): add input/output indices to sent_and_received_txouts
notmandatory
committed