Put all of our APIs into a "pinniped" category, and never use "all".

We want to have our APIs respond to `kubectl get pinniped`, and we shouldn't use `all` because we don't think most average users should have permission to see our API types, which means if we put our types there, they would get an error from `kubectl get all`.

I also added some tests to assert these properties on all `*.pinniped.dev` API resources.

Signed-off-by: Matt Moyer <moyerm@vmware.com>

apis/supervisor/config/v1alpha1/types_oidcprovider.go.tmpl

@@ -86,6 +86,7 @@ type OIDCProviderStatus struct {
 // OIDCProvider describes the configuration of an OIDC provider.
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +kubebuilder:resource:categories=pinniped
 type OIDCProvider struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`