feat(editor): Add routing middleware, permission checks, RBAC store, RBAC component (#7702)

Github issue / Community forum post (link here to close automatically):

---------

Co-authored-by: Csaba Tuncsik <csaba@n8n.io>

packages/editor-ui/src/rbac/middleware/rbac.ts

@@ -0,0 +1,25 @@
+import type { RouterMiddleware } from '@/types/router';
+import { VIEWS } from '@/constants';
+import {
+	inferProjectIdFromRoute,
+	inferResourceIdFromRoute,
+	inferResourceTypeFromRoute,
+} from '@/utils/rbacUtils';
+import type { RBACPermissionOptions } from '@/types/rbac';
+import { hasScope } from '@/rbac/checks';
+
+export const rbacMiddleware: RouterMiddleware<RBACPermissionOptions> = async (
+	to,
+	from,
+	next,
+	{ scope, options },
+) => {
+	const projectId = inferProjectIdFromRoute(to);
+	const resourceType = inferResourceTypeFromRoute(to);
+	const resourceId = resourceType ? inferResourceIdFromRoute(to) : undefined;
+
+	const valid = hasScope({ scope, projectId, resourceType, resourceId, options });
+	if (!valid) {
+		return next({ name: VIEWS.HOMEPAGE });
+	}
+};