获取链接分组

{
    "code": 1,
    "msg": "success",
    "result": [
        {
            "group_id": 111,
            "group_name": "默认分组",
            "chain_num": 4
        },
        {
            "group_id": 222,
            "group_name": "我的分组1",
            "chain_num": 0
        }
    ]
}