Should offer some speed boost, copying the file contents rather than
reading it all to memory then writing it back out. Should theoretically
be able to handle larger files as well, although some benchmarks
are TBD around filesize limits.
Expanding this as we go, currently have POC Backblaze B2 support and
basic 'disk' provider as well. Still WIP, but functional for the most
part. Also moving to simplified YAML configuration.
Overall, simplifying things to be extensible down the line. Still work
to be done, but coming along nicely.