Cache Images between app launches

[marcoroth]

When you open the app again it loads all images from source. It would be cool if we could store the images in a local store so it doesn't have to fetch them from source every time.

The library we use (https://github.com/bullinnyc/CachedAsyncImage) seems to support caching using ImageCache: https://github.com/bullinnyc/CachedAsyncImage?tab=readme-ov-file#set-image-cache-limit-if-needed