⏪️(frontend) add back Marianne font

Marianne font was in base64 in the ui-kit,
it was not an optimize way to do it.
We do not have a CDN yet so the best
is to put them back in the project in
waiting for a CDN options.

src/frontend/apps/impress/cunningham.ts

@@ -50,6 +50,13 @@ tokens.themes.default.theme = {
       ...tokens.themes.default.theme.colors,
       ...customColors,
     },
+    font: {
+      ...tokens.themes.default.theme.font,
+      families: {
+        base: 'sans-serif',
+        accent: 'sans-serif',
+      },
+    },
   },
 };
 
@@ -89,6 +96,12 @@ const dsfrTheme = {
         widthFooter: '220px',
         alt: 'Gouvernement Logo',
       },
+      font: {
+        families: {
+          base: 'Marianne',
+          accent: 'Marianne',
+        },
+      },
     },
     components: {
       'la-gaufre': true,