The 'struct odb_read_stream' and 'struct odb_write_stream'
structures have been consolidated into a single unified 'struct
odb_stream' structure, simplifying object database streaming APIs
and enabling streaming of arbitrary object types.
* ps/odb-streams:
odb/streaming: unify function names to create new streams
odb/streaming: rename `struct input_zstream_data`
odb/streaming: rename `struct read_object_fd_data`
odb/streaming: consolidate read and write streams
odb/streaming: rename `struct odb_read_stream`
odb/streaming: support streaming arbitrary object types
odb/streaming: drop `is_finished` field
odb/streaming: track write stream size in the structure