Implement blending modes for Java2D

Java2D has some support for blending in [AlphaComposite](https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/java/awt/AlphaComposite.html) and related classes. It's not clear to me that it supports screen / burn / dodge / lighten without writing some custom `Composite` instances, but that shouldn't be too hard.