Support SORT_RO (#2041)

* Support SORT_RO

* move pushSortReadOnlyArgs and SortReadOnlyOptions to generic-transformers

* clean code

Co-authored-by: leibale <leibale1998@gmail.com>

packages/client/lib/commands/SORT_RO.ts

@@ -0,0 +1,15 @@
+import { RedisCommandArguments } from '.';
+import { pushSortArguments, SortOptions } from "./generic-transformers";
+
+export const FIRST_KEY_INDEX = 1;
+
+export const IS_READ_ONLY = true;
+
+export function transformArguments(
+    key: string,
+    options?: SortOptions
+): RedisCommandArguments {
+    return pushSortArguments(['SORT_RO', key], options);
+}
+
+export declare function transformReply(): Array<string>;