feat(sso): introduce authentication with SAML

packages/backend/src/graphql/queries/get-saml-auth-providers.ee.ts

@@ -0,0 +1,9 @@
+import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+
+const getSamlAuthProviders = async () => {
+  const providers = await SamlAuthProvider.query();
+
+  return providers;
+};
+
+export default getSamlAuthProviders;