feat: enable Watchtower auto-updates for awesome_app

Added watchtower.enable label to awesome_app container for automatic
Docker image updates when new versions are pushed to the registry.

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

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

awsm/compose.yaml

@@ -44,6 +44,7 @@ services:
       - 'traefik.http.routers.${AWESOME_COMPOSE_PROJECT_NAME}-app-web-secure.middlewares=${AWESOME_COMPOSE_PROJECT_NAME}-app-web-secure-compress'
       - 'traefik.http.services.${AWESOME_COMPOSE_PROJECT_NAME}-app-web-secure.loadbalancer.server.port=3000'
       - 'traefik.docker.network=${NETWORK_NAME}'
+      - 'com.centurylinklabs.watchtower.enable=true'
 volumes:
   awesome_data:
     name: ${AWESOME_COMPOSE_PROJECT_NAME}_data