feat: add generic archive server icon

Custom archive-box icon (stone #78716C) triggered by: archive, archiver
(FR/EN), archivage (FR), archivar (ES), archivebox.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -307,6 +307,7 @@ Multiple logos can appear simultaneously if several keywords match.
 | Password vault | 1Password | `1password`, `onepassword` |
 | Password vault | KeePassXC | `keepass`, `keepassxc` |
 | Password vault | HashiCorp Vault | `hashicorp vault`, `hashicorp` |
+| Archiving | Archive server | `archive`, `archiver`, `archivage`, `archivar`, `archivebox` |
 | Mail | Mail server | `mail`, `smtp`, `imap`, `postfix`, `dovecot`, `mailcow`, `mailu`, `roundcube` |
 | Database | MariaDB | `mariadb` |
 | Orchestration | Kubernetes | `kubernetes`, `k8s`, `kubectl`, `k3s` |