Ability fo export MD file and save data on your server

### Describe the feature

It's my first time writing an issue, so please forgive me for the long title!

I thought when I'll host Haptic on my server, the data including the MD files will be saved there. I'm still not too sure where the documents are saved on my PC as I understand nothing in browser data.

I would love if we could export MDs as well, so I can keep the files wherever I want.

Thank you for your hard work! So far the project is promising!! :)

### It should be implemented because

_No response_

### Additional context

_No response_

### Would you like to work on this issue?

None