libbinder: Add object offsets to RPC Binder protocol

The list of object offsets is always empty in this CL. That will change
in follow up CLs when file descriptor support is added.

The size of the parcel data is included in the RpcWireTransaction and
RpcWireReply headers and then the object offsets are written after the
parcel data.

There was no space in RpcWireReply, so we must start a new wire protocol
version. I've added some reserved space to RpcWireReply to match
RpcWireTransaction so that it might be easier to make backwards
compatible changes later.

binderRpcTest on host went from 36 seconds to 2 minutes 24 seconds
because of the added parameterization (x4 the tests => x4 the time).

Bug: 185909244
Test: TH
Change-Id: I0121a42f8b60362e6a6d0294a350255b5f9f5673