Standardize labels across remaining stacks - Part 1
- Updated core services (traefik, authelia, sablier) with standardized labels
- Updated monitoring services (prometheus, grafana, cadvisor, uptime-kuma, loki)
- Updated utilities services (duplicati, formio, vaultwarden)
- Updated media management services (sonarr, radarr, prowlarr)
- Updated homeassistant services (esphome)
- Added proper TRAEFIK CONFIGURATION headers and comments
- Maintained service-specific configurations (authelia middleware, vaultwarden SSO disabled)
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