Add Notesnook formatted frontmatter import

[Daeraxa]

Operating system

Windows

Joplin version

2.13.13

Desktop version info

N/A

Current behaviour

Notesnook frontmatter not supported by Joplin for updating note properties when imported.

Expected behaviour

Notesnook exports files with Frontmatter containing title, created_at and updated_at fields which would be useful for Joplin to recognise for its own note property data.

Example:

---
title: "Test for frontmatter"
created_at: 07-01-2024 06:24 PM
updated_at: 07-01-2024 06:24 PM
---

# Test for frontmatter

test

Logs

No response