feat: ajout structure projet + config Node 20

components/tutorials/index.ts

@@ -0,0 +1,4 @@
+export { DifficultyBadge } from "./DifficultyBadge";
+export { TutorialCard } from "./TutorialCard";
+export { CategoryFilters, type Category } from "./CategoryFilters";
+export { TutorialsGrid } from "./TutorialsGrid";