Move RelayProof to PeerManager

Summary:
Similar to what has been done to RelayProof in D12204, removes the need for passing Connman.

Depends on D12204.

Test Plan:

ninja all check-all

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D12205