index, rpc: Add use_index option for gettxoutsetinfo

Summary:
This is a backport of core#19521 [14/17]
https://github.com/bitcoin/bitcoin/pull/19521/commits/b9362392aef2689bc106c20925859ede555d082b

Depends on D11607

Test Plan: ninja all check-all

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Differential Revision: https://reviews.bitcoinabc.org/D11608