[Request] Skip Sync When Feed Is Empty

[chadn]

Is your feature request related to a problem? Please describe.

When using this to pull from facebook events, occasionally facebook returns nothing and throws an error in the script.

When this happens, the script continues as if there were no errors, and deletes every event in the target calendar.
Eventually facebook events return events again, and target calendar is back to normal.

The problem is that for a period of time all facebook events are gone from the target calendar when they should still be there.

Describe the solution you'd like

Create a boolean setting. When true, If no events in the feed, assume a temp problem and do not delete all events in target calendar

Additional context

No response