[O01.01.12.09] Author the OpenAPI 3.2 description of OGraph bindings

[dotnetcadet]

Summary

Author an OpenAPI 3.2 description of the OGraph bindings, including the QUERY method describability.

Acceptance Criteria

• An OpenAPI 3.2 document describes the OGraph bindings.
• The QUERY method is described.
• The description is consistent with the S-05 binding spec.

Standards and Compliance

• OpenAPI 3.2 description of the QUERY-method bindings (S-05); interop-spec concern.