feat(trends): add fasting trend

PROJECT.org

@@ -601,6 +601,24 @@ The Edit log form should have from top to bottom:
 *** Description
 
 
+** TODO [#B] Add trend for fasting :food:fasting:trends:
+:PROPERTIES:
+:ID:       a290b64d-14ad-49c2-addc-0d149c0c38fc
+:END:
+
+*** Description
+
+Could we add a trend for number of fasting days over the time period? This would
+look for the gap between the last and next Food scrobble and if it's ever longer
+than a specified seconds configuration setting we'd mark it as a fasting day.
+There can be "Periodic Fasting" which is defined by default as 16 hours or "Full
+Fasting" which is designed as a 24 hour period without fasting.
+
+Fasting checking should also be skipped if it's during a LifeEvent of type
+Vacation as vacations should be exempt. This exemption should be a userprofile
+setting so folks can turn it on or off, and if it's changed the next trend
+rebuild should consider that.
+
 
 * Version 61.0 [3/3]
 ** DONE [#B] Try adding a nature app with Observations and Species