List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=2431
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=2430",
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        {
            "id": 103386,
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            "description": "Hi everyone, welcome and have fun!\n\nPAUSE/ VACATION = DISQUALIFIED! If your opponent pauses or has a vacation, please contact nobhaete.\n\nSwiss tournaments every two weeks.\n\nPlease note the change of time system",
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                "id": 12619,
                "name": "Happy Go!!!",
                "summary": "Feel free to join and create tournaments!\nCreate tournaments = admin\n\nDouble Elimination tournaments every Sunday    \nSingle Elimination tournaments every Thursday\n\nHAPPY",
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            "ended": "2023-08-18T04:06:54.165229Z",
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        {
            "id": 106225,
            "name": "Blitz 19x19 Elimination Tournament 2023-08-08 09:30",
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                "username": "matburt",
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                "icon": "https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro",
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        {
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