python client: Add FromProtobuf methods to data objects
python client: Add FromProtobuf methods to data objects

To centralize the place where protobufs are decoded.

ld3300/ola,nightrune/ola,ld3300/ola,nightrune/ola,ld3300/ola,ld3300/ola,nightrune/ola,nightrune/ola,nightrune/ola,ld3300/ola,ld3300/ola,nightrune/ola,nightrune/ola,ld3300/ola