Monorepo for Tangled tangled.org

dont delete artifact blobs on attachment maintenance, echo back advertised object-format #4665

Merged ptr.pet
targeting master from dwn/fixies
Merged opened by and assigned to ptr.pet
targeting master from dwn/fixies
Commits 2

knot2/xrpc: stop deleting artifact blobs on attachment maintenance
gix-receive-pack: echo the advertised object-format