common/service: Add lookup_origins_by_sha1s function
It wraps storage.origin_get_by_sha1 call in order to resolve origin SWHIDs,
provided by swh-graph Web API, to origin URLs.
Related to swh-graph#2113 (closed) Related to swh/infra/sysadm-environment#2589 (closed)
Migrated from D4009 (view on Phabricator)