Create a service.

• To associate locations or resources, pass each ID as a separate query param.
• Example: locations=uuid1&locations=uuid2&resources=uuid3
• An omitted locations query on a COMPANY-scoped service links every company location.
• An empty or blank locations value, including locations=, links no locations.
• An omitted, empty, or blank resources value links no resources. COMPANY scope does not link every company resource unless linkAllResources=true.
• linkAllResources=true on a COMPANY-scoped service, with no resource ids, links every company resource. This is a behavior change: callers should pass resources explicitly or use the opt-in. Explicit resource ids still win. The flag does nothing for other scopes.
• Bulk create uses the same query.