chore: add bruno to useful links

Author: NagariaHussain

src/content/docs/handouts/setup.md

@@ -13,6 +13,7 @@ description: Links, Documentations, and more.
 1. [Intro Slides](https://docs.google.com/presentation/d/1dvZFucteJsuo3RE6StpCZahE6D3puNfvbFhHINYADn8/edit#slide=id.g25ef0a8935f_1_131)
 1. [Bench Cheatsheet](https://hussain.click/bench-cheatsheet)
 1. [Submission Portal](https://frappe.school/assignments-portal/day-1)
+1. [Bruno API Client](https://usebruno.com)
 
 ## Codespaces