Ajout documentation projets OpenClassrooms (P02-P13) avec support bilingue

- Add all project documentation pages in French and English
- Include PDF viewers for presentations and documents (P10, P12)
- Add collapsible sections for scripts and logs (P10)
- Add static assets for all projects
- Update sidebars with new projets-openclassrooms category
- Add npm start:en script for testing English locale

package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "docusaurus": "docusaurus",
     "start": "docusaurus start",
+    "start:en": "docusaurus start --locale en",
     "build": "docusaurus build",
     "swizzle": "docusaurus swizzle",
     "deploy": "docusaurus deploy",