Add new nodes & marks to the markdown for notes (#2836)
Add new nodes & marks to the markdown for notes (#2836)

Atlastkit is going to be updated on Cozy-Notes, and the new version is
coming with:
- 2 new nodes, date and status
- 3 new marks, indentation, alignement and breakout

The markdown serialization of the notes has been updated to include the
content when those new nodes and marks will be used.
nono/cozy-stack,nono/cozy-stack,nono/cozy-stack,nono/cozy-stack,nono/cozy-stack