Add support for FT.SEARCH NOCONTENT (#2610)

* Add support for NOCONTENT in FT.SEARCH

* Move support for NOCONTENT search option from client.search to client.searchNoContent

* Add test for SEARCH_NOCONTENT#transformReply

* Fix typo

* Enable test

* Update test field type

---------

Co-authored-by: Leibale <me@leibale.com>

packages/search/lib/commands/SEARCH_NOCONTENT.ts

@@ -0,0 +1,30 @@
+import { RedisCommandArguments } from "@redis/client/dist/lib/commands";
+import { pushSearchOptions } from ".";
+import { SearchOptions, SearchRawReply } from "./SEARCH";
+
+export const FIRST_KEY_INDEX = 1;
+
+export const IS_READ_ONLY = true;
+
+export function transformArguments(
+    index: string,
+    query: string,
+    options?: SearchOptions
+): RedisCommandArguments {
+    return pushSearchOptions(
+        ['FT.SEARCH', index, query, 'NOCONTENT'],
+        options
+    );
+}
+
+export interface SearchNoContentReply {
+    total: number;
+    documents: Array<string>;
+};
+
+export function transformReply(reply: SearchRawReply): SearchNoContentReply {
+    return {
+        total: reply[0],
+        documents: reply.slice(1)
+    };
+}