feat: Add store to manage Articles (#5048)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/api/helpCenter/articles.js

@@ -0,0 +1,9 @@
+import ApiClient from '../ApiClient';
+
+class ArticlesAPI extends ApiClient {
+  constructor() {
+    super('articles', { accountScoped: true });
+  }
+}
+
+export default new ArticlesAPI();