Expose the explicit import action over the console API. The mutation
takes an organization and a common third party, authorizes as a
third-party create, and delegates to ThirdPartyService.ImportFromCommon,
returning the org ThirdParty edge plus a created flag so the client can
tell a fresh import from a re-import.
Add an end-to-end test covering the two behaviours that matter: the
first import seeds the org vendor from the catalog and backfills the
linked tracker pattern's third_party_id, and a second import is
idempotent, returning the same row with created=false.
The gqlgen-generated types and execution code are build artifacts (not
tracked), so only the schema and the resolver change here.
Signed-off-by: Émile Ré <emile@probo.com>
e2d6972da5