Ajout article stockage distribué et traduction complète blog EN

- Add blog post about choosing distributed storage for Proxmox HA cluster
- Add Forgejo link to navbar
- Complete EN blog translation (welcome post, authors.yml)

docusaurus.config.ts

@@ -112,6 +112,11 @@ const config: Config = {
           label: 'GitHub',
           position: 'right',
         },
+        {
+          href: 'https://forgejo.tellserv.fr/Tellsanguis',
+          label: 'Forgejo',
+          position: 'right',
+        },
       ],
     },
     footer: {