There is a need to analyze some response information in API client.
Define `ResponseMetaInfo` structure of response information. Add
`WithResponseInfoHandler` client option which allows to set the response
info callback. The callback is called right after any response is received.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Change accepted/returned value type of `SetTrust` / `Trust` methods of
`SendIntermediateTrustPrm` structure to `reputation.PeerToPeerTrust`.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>