Add story for `ApplicationMenu` (#13948)

This PR adds a story for the `ApplicationMenu` so it can be viewed in
isolation.

<img width="664" alt="Screenshot 2024-07-08 at 4 45 24 PM"
src="https://github.com/zed-industries/zed/assets/1486634/dca3dd32-4845-4009-b781-b4bac9ba6049">

Release Notes:

- N/A

Marshall Bowers committed 2y ago

1a0242eff741973631ba34f7828031d6cee84b06

Parent: ea9ba68

Committed by GitHub <noreply@github.com> on 7/8/2024, 8:55:55 PM