查询用户加入的班级 (course:read)

Example response

{
  "courses": [
    {
      "id": 42,
      "tag": {
        "id": 42
      },
      "term": {
        "id": 42
      },
      "url": "/OnlineJudge/api/v1/course/42",
      "join_url": "/OnlineJudge/api/v1/course/42/join",
      "quit_url": "/OnlineJudge/api/v1/course/42/quit",
      "html_url": "/OnlineJudge/course/42"
    }
  ]
}