given a stream of packfile contents, emit the raw git objects contained within + their offsets.
note, this doesn't do the actual translation into real git objects, rather, it'll give you the inflated data that an object represents and its offset; likewise it skips actually applying deltas in the case of ofs and ref delta. other modules will do that.
var list =fs
create a through stream of pack objects.
reference: Array | Buffer | null // if delta, reference will contain the relevant offset data.data: Buffer // the inflated datatype: 1 | 2 | 3 | 4 | 6 | 7 // the packed git object typeoffset: Number // the offset into the packfilenum: Number // the number of the object from expected_objects -> 0