schedule

[smnorris]

Add schedule interval to config and adapt GHA workflow to those schedules.

Potential intervals ?:

• monthly
• 90 days
• annual

Notes:

• a report will be generated at each interval, and we don't want too many reports - minimum interval is probably only monthly?
• GHA workflows require that something actually happens in the repo every 90 days - otherwise a notification is sent and the user has to click a button to confirm that the action workflow should remain active - what is the best way to adapt to this? Are GHA workflows actually an effective way to run this job on an ongoing basis?

[smnorris]

requested scheduling options:

• daily
• weekly
• monthly
• tri-monthly (every 3 months)
• maybe hex-monthly (every 6 months)