Bucketing by 'Week' and 'Month' now supported in Metric Monitors

Historically, Metric Monitors supported bucketing data by hour and by day. We now also support bucketing by week and month, making it much easier to monitor sparse or infrequently updated data. For example, if a financial institution wants to do anomaly detection on data they get from an external partner once/month, that is now much easier to do than before.

In addition, when bucketing by week or month, the monitor now backfills much more historical data than before in order to understand seasonal trends. Up to 3 years of history is backfilled when bucketing by week, and up to 10 years when bucketing by month.