Add a script for archiving the JSON schedule

I want to have a little redundancy just in case I'm unable to record data.

bin/schedule-archive.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+SCHEDULE_URL="https://smtgvs.weathernews.jp/a/solive_timetable/timetable.json"
+DIR="$(date +"%Y/%m")"
+OUT="$(date +"$DIR/%d_%H:%M.json")"
+mkdir -p $DIR
+curl -q "$SCHEDULE_URL" > $OUT