fix custom local fonts load

We don't want to use google font anymore !

Use an alternative to gfont

https://alternativeto.net/software/google-web-fonts/

I think font library is a good FLOS font host alternative.

Use it in local (self-hoted) or online

https://github.com/facebook/docusaurus/issues/3788

TODO

• find the fonts we use in this site
• find the same font, or use the fonts in graphical chart
• Change the fonts in code (local)
• Add fonts informations on the file project
• Add fonts informations and files on the cloud
• change code font for jetbrain mono see in vidéo video
• change list font to Montserrat
• change table font to Montserrat