Support [PEP 792 (Project status markers in the simple index)](https://peps.python.org/pep-0792/) ([spec in packaging docs](https://packaging.python.org/en/latest/specifications/project-status-markers/); [JSON schema in packaging docks](https://packaging.python.org/en/latest/specifications/simple-repository-api/#simple-repository-json-project-detail)). Simple pass-through from source index JSON responses, with first-index wins.
Support PEP 792 (Project status markers in the simple index) (spec in packaging docs; JSON schema in packaging docks). Simple pass-through from source index JSON responses, with first-index wins.