[move-only] Extract constants from addrman .h to .cpp
Summary:
Partial backport of core#22740:
https://github.com/bitcoin/bitcoin/pull/22740/commits/af9638a0fbb79bec743f4d2275b89e9573cfdc0a
Depends on D12285.
Test Plan:
ninja all check
Reviewers: #bitcoin_abc, PiRK
Reviewed By: #bitcoin_abc, PiRK
Differential Revision: https://reviews.bitcoinabc.org/D12286