Changes to In-App Events Metadata

for the query request parameter language, default value us was removed

the response's body type changed from no type to object for status 200

api tag In-App Events added

added the new enum value ipad to the query request parameter device

removed subschema #1: iOS EXAMPLE subschema #2: Android EXAMPLE from the response body oneOf list for the response status 200

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 422

added the optional property metadata to the response with the 200 status

added the optional property result to the response with the 200 status