feature request: autodetected subtask creation via task notes

[switchupcb]

Taskade has a feature which allows you to add a checkbox , bulletpoint, etc to the "project" (Tablane Top Level Task) and it will be considered a new task. This allows the user to manage a TO-DO list as if the user was writing it down naturally, but with extra benefits.

As an example

This is a top-level task.
[  ] This is a checkbox that Tablane detects and adds to the UI as a subtask.
    [  ] So on an so forth.
[  ] These tasks are manageable from the UI, but also from the parent task.

[MarconLP]

I liked the idea, but I think for Tablane something like this would make more sense:

This is a top-level task.
- This is a subtask.
 - And a subtask of the subtask.
A top-level task again.

[MarconLP]

Multi-line paste has been added in this PR: #24

It does not detect subtasks, yet