Changes to Mark a to-rebook path, partial dropout or appointment to reschedule as handled

added the new path_monitoring enum value to the context response property for the response status 200

added the new path_monitoring enum value to the request property context

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

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

added the new partial_dropout enum value to the context response property for the response status 200

added the new partial_dropout enum value to the request property context

endpoint added