Deprecate -bytespersigop in favor of -bytespersigcheck
Summary:
The -bytespersigop option is still available for now for compatibility, with a deprecation notice.
This is rename-only, there is no change in behavior.
Test Plan:
ninja all check-all
Reviewers: #bitcoin_abc, PiRK
Reviewed By: #bitcoin_abc, PiRK
Differential Revision: https://reviews.bitcoinabc.org/D12810