Add option to sync notes

[jasle]

It would be extremely helpful to have a way to synchronize notes across devices or at least make them easily accessible from external services. Currently, synchronization is not supported, which makes multi-device usage more difficult.

As a first step, a simple solution could be:

Automatically export notes to a predefined folder whenever they are saved.
This would allow users to sync that folder with existing services (e.g., cloud providers or sync tools).

Suggested improvement:

• Implement an automatic export-on-save feature to a user-selected directory
• This would enable basic synchronization until a full sync solution is implemented

[Ethran]

@jdkruzr was working on some implementation of syncing, but I have no idea in what state it is.

[Ethran]

O, and:

Implement an automatic export-on-save feature to a user-selected directory

is already implemented, or at least partially: on Library view, open notebook setting and there is a button to Link notebook to file.