Bytecode-powered optional enhancements

[A248]

The following would require an optional bytecode manipulating library:

• ConfigurationSorter based on source file ordering, requiring no manual order specification
• Configuration proxy implemented without reflection, improving performance

[A248]

We need to define an interface for dynamic generation of configuration interface implementations. By default, the library will use reflection with a dynamic proxy. Runtime class generation can be provided by an additional module like dazzleconf-asm, which can define hidden classes, if supported, using a multi-release jar.

[A248]

I'm going to prefer to use ASM to implement this, and there's a good reason why. An annotation processor requires compile-time configuration, but a big bonus to using DazzleConf is that it supports runtime generic parameterization and configuration interface extension. Namely, serializers can load arbitrary configuration sub-interfaces (even those that are detected by service-loading) and generic arguments add further dynamism. I don't think these features fit well with a compile-time annotation processor, so instead we'll use the runtime generation method with ASM.