storage*: Open order parameter to origin-visit-get endpoint

This allows clients to search from most recent to oldest visit when calling the endpoint with order parameter "desc" (visit id desc). [1]

This keeps (and explicits) the existing sorting order as "asc" (visit id asc).

• [1] See !942 (closed) for such use case

Test Plan

tox

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Migrated from D3359 (view on Phabricator)