ARI event type filtering

Event type filtering is now enabled, and configurable per application. An app is
now able to specify which events are sent to the application by configuring an
allowed and/or disallowed list(s). This can be done by issuing the following:

PUT /applications/{applicationName}/eventFilter

And then enumerating the allowed/disallowed event types as a body parameter.

ASTERISK-28106

Change-Id: I9671ba1fcdb3b6c830b553d4c5365aed5d588d5b

res/ari/ari_model_validators.h

@@ -1830,6 +1830,8 @@ ari_validator ast_ari_validate_application_fn(void);
  * - channel_ids: List[string] (required)
  * - device_names: List[string] (required)
  * - endpoint_ids: List[string] (required)
+ * - events_allowed: List[object] (required)
+ * - events_disallowed: List[object] (required)
  * - name: string (required)
  */