Also refactor this a bit so Note contains a NoteData. I'm really not
convinced about today's abstractions, and feel I might have made this
entire thing much much worse.
With this, the application compiles again. And note editing is working
again. This is was the first of some small refactors in order to
implement both async note loading and a support for directories.
The loading/saving/deleting of the Note class is now inbuilt. It's not
offloaded to a NoteRepo. We're always going to be storing them on disk,
for now. It's also way easier to manage them this way.
For now I've mostly tried to follow the same style guide as the flutter
repository, with many options disabled. Eventually, maybe it would make
sense to be far stricter.
It all just makes far more since when each Note has a fileName.
Though we don't save the fileName in the YAML header. It seems quite
redundant to do that.
Another advantage of this is that if we can read any file ending with a
'.md' in a git repo. It doesn't need to be named exactly how we want it,
and we will still save the details correctly.
Now notes are saved in the git repo, and immediately synced. This is not
the best implementation, as the notes are being reloaded a lot, and
the error handling is terrible (I miss golang). But it's the first
working poc.
