Creates a task.
To fill in a custom field, add the custom field 'serializationname' to the request
params, with the desired value. Only 100 tags maximum can be specified.
When you specify a parent_task_id you will create a subtask. Some attributes are not available for subtasks:
clickup_id, monday_id, project_id and contact_id.
To attach a recurrence, set recurrence_type (Weekly, Monthly, Yearly, Periodically, Custom) along
with the matching `recurrence*fields.start_timeis required when a recurrence is set. ForCustom, also provide recurrence_frequencyandrecurrence_customable_type (WeeklyorMonthly) with the corresponding recurrence_week_daysorrecurrence_day_into_month`.