Move service/enums.proto to proto_logging

Add usb contaminent status to service/enums.proto. It was previously in
usb.proto, but is an enum. Enums.proto is a better fit because other
enums in usb.proto are located in enums.proto, and the enum is also used
by atoms.proto.

Additionally, move the enums.proto file to proto_logging, since all
atoms.proto dependencies should be in proto_logging.

Test: m
Bug: 182392879
Change-Id: I9ea0a1482336694c446e950ea5cb46b95372b76d