[bitcoin/bitcoin] ZMQ: add options to configure outbound message high water mark, aka SNDHWM (#14060)

domob1812 commented on this pull request.

> @@ -98,11 +100,11 @@ bool CZMQNotificationInterface::Initialize()
CZMQAbstractNotifier *notifier = *i;
if (notifier->Initialize(pcontext))
{
— LogPrint(BCLog::ZMQ, » Notifier %s ready (address = %s)\n», notifier->GetType(), notifier->GetAddress());
+ LogPrint(BCLog::ZMQ, «zmq: Notifier %s ready (address = %s)\n», notifier->GetType(), notifier->GetAddress());

I think this change makes sense — but it is unrelated to your other change, so perhaps move it at least to a separate commit?