I manage over 150 Kubernetes clusters distributed globally and am contemplating the establishment of a unified Kubernetes API server gateway. My intention is to employ SpiceDB as a substitute for Kubernetes' native RBAC to facilitate granular authorization. By creating a relationship for each Kubernetes object, such as linking it to a service, and then granting access privileges to users assigned service roles to access that resource, would SpiceDB be an appropriate choice for this purpose? The current count of objects per Kubernetes cluster approximates 100,000.