add addscores to aggregate search command (#2799)

* add addscores to aggregate search command

* change `true` to `boolean`

---------

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

Author: sjpotter

packages/search/lib/commands/AGGREGATE.spec.ts

@@ -19,6 +19,13 @@ describe('AGGREGATE', () => {
             );
         });
 
+        it('with ADDSCORES', () => {
+            assert.deepEqual(
+                transformArguments('index', '*', { ADDSCORES: true }),
+                ['FT.AGGREGATE', 'index', '*', 'ADDSCORES']
+            );
+        });
+
         describe('with LOAD', () => {
             describe('single', () => {
                 describe('without alias', () => {

packages/search/lib/commands/AGGREGATE.ts

@@ -119,7 +119,8 @@ type LoadField = PropertyName | {
 }
 
 export interface AggregateOptions {
-    VERBATIM?: true;
+    VERBATIM?: boolean;
+    ADDSCORES?: boolean;
     LOAD?: LoadField | Array<LoadField>;
     STEPS?: Array<GroupByStep | SortStep | ApplyStep | LimitStep | FilterStep>;
     PARAMS?: Params;
@@ -150,6 +151,10 @@ export function pushAggregatehOptions(
         args.push('VERBATIM');
     }
 
+    if (options?.ADDSCORES) {
+        args.push('ADDSCORES');
+    }
+
     if (options?.LOAD) {
         args.push('LOAD');
         pushArgumentsWithLength(args, () => {
@@ -308,4 +313,4 @@ export function transformReply(rawReply: AggregateRawReply): AggregateReply {
         total: rawReply[0],
         results
     };
-}
+}