[feature request] Export custom UI as standalone .exe / app

[samamou]

Creating a custom UI with score_plugin_js, following the docs from: https://ossia.io/score-docs/custom-ui.html

Running with --ui /path-to-qml-file /path-to-score.score

I would like to have an app/.exe for ease of distribution (with a custom icon 🐱)

[jcelerier]

ossia builds in https://github.com/ossia/score/releases/tag/continuous are able finally to run QML scripts which brings us much closer to this reality - if you could test them with livepose UI it'd be great