[backport#15497] Add support for stop/[start,stop] ranges to scantxoutset

Summary:
https://github.com/bitcoin/bitcoin/pull/15497/commits/45660116311dc4cbb73e2ddecb1d0cc407d7aeb7

Depends on D6611

Partial backport of Core PR15497

Test Plan:

ninja check
test_runner.py rpc_scantxoutset

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Differential Revision: https://reviews.bitcoinabc.org/D6612