[Wallet] Add RPC call "rescanblockchain <startheight> <stopheight>"

Summary:
Backport core PR7061

[Wallet] add rescanblockchain <start_height> <stop_height> RPC command
[QA] Add RPC based rescan test

Test Plan:

make check
./test/functional/test_runner.py

Reviewers: #bitcoin_abc, jasonbcox

Reviewed By: #bitcoin_abc, jasonbcox

Subscribers: jasonbcox, teamcity

Differential Revision: https://reviews.bitcoinabc.org/D1730