Support for local replication filters

[krasserm]

In addition to ReplicationConnection-scoped replication filters, allow applications to define local ReplicationEndpoint-scoped replication filters. This allows replication sources to define which events can be replicated at all. Local replication filters should be configurable per event log name.

For example, a replication endpoint that doesn't want local events of type X to be replicated to other locations should setup a local replication filter that doesn't accept events of type X. This frees other replication endpoints to specify these filters in their replication connections. A main use case for local replication filters is to separate location-specific events from replicated events.