Allow rules to manage Scarpet apps (Scarpet Rules) (#519)

by altrisi

docs/scarpet/api/Events.md

@@ -43,6 +43,9 @@ at the same time.
 ### `__on_lightning(block, mode)`
 Triggered right after a lightning strikes. Lightning entity as well as potential horseman trap would 
 already be spawned at that point. `mode` is `true` if the lightning did cause a trap to spawn. 
+
+### `__on_carpet_rule_changes(rule, new_value)`
+Triggered when a Carpet rule is changed. It includes extension rules, which will be namespaced as `namespace:rule`.
  
 ## Player events