Add minimum support for static credential stores to admin UI (#1145)

* cred store read ability

* filter out static cred stores and credentials from credential libraries

* chore: 🤖 finish up minimum static cred store support

Co-authored-by: dharini <dharini@hashicorp.com>

addons/api/app/abilities/credential-store.js

@@ -0,0 +1 @@
+export { default } from 'api/abilities/credential-store';