Add initial ownership tests and send request uuid on owner search

p2p-rm/include/ftl/p2p-rm/cluster.hpp

p2p-rm/include/ftl/p2p-rm/mapped_ptr.hpp

p2p-rm/include/ftl/p2p-rm/protocol.hpp

p2p-rm/include/ftl/uuid.hpp

p2p-rm/src/blob.cpp

p2p-rm/src/cluster.cpp

p2p-rm/test/CMakeLists.txt

p2p-rm/test/p2p_integration.cpp