This creates a content-addressed store for all media files. It is not
yet usable but an API and cdn backend will be implemented from it in a
later commit, as well as tooling for export and tagging.
Signed-off-by: Yonah <contrib@gensokyo.uk>
This implementation of cmd/msrfetch is only temporary, used to fetch the
testdata. At this point we have all metadata present in the repo and all
that is left is to fetch the media.
Signed-off-by: Yonah <contrib@gensokyo.uk>