feat(admin-ui): Add French translations (#5031)

* feat(admin-ui): add fr translations

* chore: register french in available languages

* chore: apply suggestions

---------

Co-authored-by: Geoffroy Empain <geoffroy@charlie-bravo.be>

packages/admin-ui/ui/src/i18n/index.ts

@@ -8,6 +8,10 @@ export const supportedLanguages = [
     locale: "en",
     name: "English",
   },
+  {
+    locale: "fr",
+    name: "Français",
+  },
 ]
 
 void i18n