Resource to list and view all available contests. Use `current/` to get the current Contest.

GET /api/contests/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "id": 1,
        "shortName": "cqtufm2026",
        "deadline": "2026-02-08T23:59:59Z",
        "qsoStartTime": "2026-02-05T18:00:00Z",
        "qsoEndTime": "2026-02-05T18:59:59Z",
        "callQrg": 1
    }
]