Allow Parameterized Types in Feature Hierarchy

[feroult]

Right now, we can't create a generic hook for a generic base class like this:

public abstract class BaseAggregator<T extends SomeClass> {
}

public class BaseHook<T extends SomeClass> extends Hook<BaseAggregator<T> {
}

To support this scenario, it is necessary to change the following ReflectionUtils method:

public static Class<?> getFeatureTypeArgumentAt(Class<?> clazz, int index) {
    Type superClassGenericType = getGenericTypeArgumentAt(clazz.getGenericSuperclass(), index);

    if (superClassGenericType instanceof TypeVariable) {
        return (Class<?>) getGenericTypeBound(clazz, ((TypeVariable) superClassGenericType).getName());
    }

    return (Class<?>) superClassGenericType;
}

[luanpotter]

Probably could replace that method with something like Java Classmate. Shouldn't be hard.