增加定时任务

[pwxiao]

增加schedule_task方法实现定时任务

lag = Lagrange(
    int(os.environ.get("LAGRANGE_UIN", "0")),
    "linux",
    os.environ.get("LAGRANGE_SIGN_URL", "https://sign.lagrangecore.org/api/sign/25765")
)
install_loguru()
lag.log.set_level("DEBUG")
lag.subscribe(GroupMessage, msg_handler)

# 添加计划任务
lag.schedule_task(scheduled_task)

[pwxiao]

approve

[DarkRRb]

Scheduled tasks should be provided by the upper level framework or users themselves