-q/--quiet flag for fly apps list

[fliepeltje]

From a UX perspective, it'd make sense to have the -q flag available when listing apps to allow for easier destruction of short-lived apps.

Basically the equivalent of fly m list -q for apps :)

[yfenes]

Hey @fliepeltje,

I've applied to Fly via email. And proactively created the PR #3712 for visibility.
Could you please let me know who I should contact regarding my application?

(just wanted to reach out here in a closed issue to avoid interrupting any ongoing discussions.)