feat: add ByteStash service for code snippet management

- Add ByteStash Docker service configuration and deployment
- Configure subdomain routing through Caddy
- Add DNS record for ByteStash subdomain
- Update development service category to include ByteStash

🤖 Generated with [Claude Code](https://claude.ai/code)

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

roles/docker/templates/codeserver-compose.yml.j2

@@ -7,6 +7,7 @@ services:
       glance.icon: si:vscodium
       glance.url: https://{{ subdomains.code }}/
       glance.description: Code Server
+      mag37.dockcheck.update: true
     container_name: codeserver
     volumes:
       - home:/home