List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-players_start&page=5788
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "低段リーグ参加希望の方は、このページのチャット欄に参加希望旨ご記載くださいm(..)m参加者確定後、招待いたします。\n\nなお、人数が多い場合は、抽選によりリーグを分割します(1リーグ8名程度目安)。",
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