Spring Support cglib generated classes with TestCompiler

To be able to test the behavior of Cglib proxies, we need to customize the classpath for both the compilation and the loading of classes in DynamicClassLoader.

The use case is as follows: AOT is processing candidates, which generates a cglib proxy in target/some-location. The class is available and then referenced in AOT-generated code.

Currently the compilation is failing as the class in target/some-location cannot be resolved. Once we fix that, we need to be able to load it in DynamicClassLoader.