DDSIRTP26 — Introduce a concept of Partitions at the DomainParticipant level

At the wire-protocol level currently only DataWriters and DataReaders have Partitions.

It would be useful to have a similar concept/Qos at the DomainParticipant level. This would allow system deployments to control better participant matching.

While the same could be implemented by adding the the partitions to all Readers and Writers in the Participant the process would be tedious and far less efficient. For example with Participant partitions it would be possible for Participants that do not have a matching partition to avoid doing EndpointDiscovery.