Implement custom roles and improve permissions logic

The commit refactors the handling of account roles and enhances permissions checks. The account role has been shifted to use a string type, providing the ability to define custom roles. It also introduces the RolesDataProvider component, which stipulates role-related data for different forms and tables. The modification goes further to consider user role hierarchy in permissions checks, offering a more granular access control.

packages/billing-gateway/src/components/embedded-checkout.tsx

@@ -78,7 +78,7 @@ function buildLazyComponent<
 
     return (
       <Suspense fallback={fallback}>
-        {/* @ts-expect-error */}
+        {/* @ts-expect-error: weird TS */}
         <LoadedComponent
           onClose={props.onClose}
           checkoutToken={props.checkoutToken}