Created & applied new event_object type (#109)

Created new event type.
some components only allow for an event to be an object, not a string
Co-authored-by: Daan Verstraten <daanverstraten@hotmail.com>

source/behavior/entities/format/components/sittable.json

@@ -7,12 +7,12 @@
   "required": [],
   "properties": {
     "sit_event": {
-      "$ref": "../types/event.json",
+      "$ref": "../types/event_object.json",
       "description": "Event to run when the entity enters the `sit` state.",
       "title": "Sit Event"
     },
     "stand_event": {
-      "$ref": "../types/event.json",
+      "$ref": "../types/event_object.json",
       "description": "Event to run when the entity exits the `sit` state.",
       "title": "Stand Event"
     }