List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=subsequent_pairing_method&page=239
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "time_start": "2020-04-05T16:01:00Z",
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            "first_pairing_method": "random",
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            "min_ranking": 5,
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            "analysis_enabled": true,
            "exclusivity": "open",
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            "ended": "2020-09-11T01:22:51.560698Z",
            "start_waiting": "2020-04-05T16:01:01.793032Z",
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}