SDL3 Example: asyncio/01-load-bitmaps

This example code loads a few bitmap files from disk using the asynchronous i/o, and then draws it to the window. It uses a task group to watch multiple reads and deal with them in whatever order they finish. <br/> <br/> Note that for a single tiny file like this, you'd probably not want to bother with async i/o in real life, but this is just an example of how to do it.