[Bing Ads Audiences] Add description in action (#3132)

* scaffold new bing ads audiences destination

* remove unused tests

* Add action boilerplate in new destination

* Add description in action

Author: harsh-joshi99

packages/destination-actions/src/destinations/bing-ads-audiences/syncAudiences/index.ts

@@ -4,7 +4,7 @@ import type { Payload } from './generated-types'
 
 const action: ActionDefinition<Settings, Payload> = {
   title: 'Sync Audiences',
-  description: '',
+  description: 'Sync users to Bing Ads',
   fields: {},
   perform: (request, data) => {
     // Make your partner api request here!