Created an action this morning to prompt for a task and send it to Todoist. It uses the Todoist API, and takes the prompt information only (no draft required) to send a single task over to Todoist. You can find the action here.
The prompt shows a text field where you can enter the task in the normal Todoist manner, using the quick add portion of the Todoist API, including the task, date, project, priority, etc. The note field will allow you to add a note.