Add missing web case for packed header

Author: abnegate

templates/web/src/services/template.ts.twig

@@ -184,6 +184,9 @@ export class {{ service.name | caseUcfirst }} extends Service {
 {% for key, header in method.headers %}
                 '{{ key }}': '{{ header }}',
 {% endfor %}
+{% if method.type == 'graphql' %}
+                'x-{{ spec.title }}-graphql-packed': 'true',
+{% endif %}
             }, payload);
 {% endif %}
 {% endif %}