appview,xrpc: rewrite RepoUploadBlob to accept content types
uploading a blob without the content type results in a 403
ScopeMissingError, but indigo does not let us specify one! rewriting the
API to allow specifying the blob mime type is a temporary fix until
upstream allows this.
Signed-off-by: oppiliappan <me@oppi.li>
authored by
tangled.org
c2049613
c983de83