Add functions to generate HTTP API clients and servers from databases.
This moves the interesting parts of swh-indexer!421 (closed) into the core, so other components can use them as well.
Test Plan
make test
Migrated from D507 (view on Phabricator)
Staging instance, all changes can be removed at any time
This moves the interesting parts of swh-indexer!421 (closed) into the core, so other components can use them as well.
make test
Migrated from D507 (view on Phabricator)