plan: for hkjc
step_1: schedule every week to update raceDay schedule, 
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        step_2: subscribe to "jc_admin/raceDay_schedule"
      clear up schedule and schedule every raceDay when subscribion updated
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            when raceDay updated trigger event "hkjc_raceDay_schedule_onUpdate"
                        create all job for start a raceDay
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                when raceDay start trigger event "hkjc_raceDay_start"
                will create a race job run every 5min to reload the web drivce
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                    get data and upload to firestore

plan: for aujc
        no idea yet :(

need a plan for any oversea raceDay come up