feat: add ability to run apps from the launchpad

[pinage404]

Hello,

This tool seems to work great when installing brew apps from nix-darwin nor home-manager :clap:

Currently, when installing brew apps from a specific project (without nix-darwin nor home-manager), the app is not launchable from the launchpad

This PR is a proof of concept to start a discussion

How should we make apps installed from a specific project usable from the launchpad ?

By submiting this PR, I agree to license this contribution under Creative Commons’ CC0 license.

[hraban]

Interesting. I have to think about this for a bit.