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>

deploy/supervisor/config.supervisor.pinniped.dev_oidcproviders.yaml

@@ -10,6 +10,8 @@ metadata:
 spec:
   group: config.supervisor.pinniped.dev
   names:
+    categories:
+    - pinniped
     kind: OIDCProvider
     listKind: OIDCProviderList
     plural: oidcproviders