Provide a way to generate deeper test trees using `@ParameterizedTest`

[britter]

@ParameterizedTest is a great feature to implement data-driven tests with little boilerplate code. The introduction of Named and the changes in #3818 further improved this by making it easier to assign names to argument sets.

However if I want to further group my arguments, I need to use more complex features such as @Nested or @TestFactory. It would be great if @ParameterizedTest provided a way to introduce deeper nesting in the test tree.

For example with the following:

@MethodSource("provideGrouped")
@ParameterizedTest
void test(String name, int value) {
// ...
}

static Stream<Arguments> provideGrouped() {
  return Stream.of(
    argumentSet("group-1", arguments("one", 1), arguments("two", 2)),
    argumentSet("group-2", arguments("Monday", 1), arguments("Tuesday", 2)),
  );
}

I'd like to have the following test tree:

- test(String, int)
-- group-1 
---- "one", 1
---- "two", 2
-- group-2
---- "Monday", 1
---- "Tuesday", 2

Of course this should work with deeper nesting, @ParameterizedClass, and nested Named arguments ;)

Deliverables

• Deeply nested test trees based on @ParameterizedTest and Arguments