[Feature Request] Marelle font

[sebojolais]

** What is the problem? **
When a country uses a cursive handwriting, it is hard to find a good font that could be helpful for the pupil.

Describe the solution you'd like
The french DNE (Direction du Numérique pour l'Éducation) has just released a new free font.
https://marelle.forge.apps.education.fr/

The font is:

• done by professional
• supervised by teachers
• follows the french best practices (maybe useful for other countries with cursive handwriting)

The fonts EcritureA and EcritureB already in OB have some issues :

• The license is not really free
• They do not follow the actual best practices for cursive writing.

If you are ok to include the font in OB, I can update this PR #1357 with this new font

Thank you in advance for the answer.

[SeeDborg]

+1 on this, the font is awesome.

[rathann]

Oh nice, an OFL-licensed font. Debian and Fedora could ship it, then.

[SofianElmotiem]

All 8 variants are included along with the OFL license file. The fonts are loaded automatically by the existing buildFontList() mechanism in UBResources.cpp and no code changes were needed. You can see the work at: https://github.com/claas998/OpenBoard/tree/feature/add-marelle-font