♻️(frontend) Marianne single source of truth

We now use Marianne font from @gouvfr-lasuite/ui-kit
package instead of a versionned local copies.
This ensures we always use the latest version of
the font.
During a build or dev command, Marianne font files
are copied from node_modules to the public assets
folder. They can stop being versionned.

src/frontend/apps/impress/.prettierignore

@@ -1,2 +1,3 @@
 next-env.d.ts
 service-worker.js
+public/assets/fonts/*