title: Jetpack Compose: Get a callback when the image has finished loading with Coil
body: <p>I'm loading a pretty large <strong>resource image</strong> using <code>Coil</code> for <code>Jetpack Compose</code> and it takes some tens of milliseconds to load, even hundreds when the screen is loaded for the first time. I want to not display some parts of the screen if the image isn't loaded yet. I wandered into the <code>rememberImagePainter</code> method's implementation but I couldn't find something to help me.</p>