Support additional JUnit Jupiter annotations

[sbrannen]

SpringJUnit5Check could be updated to consider all testable methods (e.g., @RepeatedTest, @ParameterizedTest, @TestFactory, and @TestTemplate) in addition to @Test methods.

[wilkinsona]

#138 implements the @TestTemplate part of this.

[sbrannen]

@RepeatedTest and @ParameterizedTest are meta-annotated with @TestTemplate.

So if com.puppycrawl.tools.checkstyle.utils.AnnotationUtil finds meta-annotations, there would then be no need to search for explicitly for @RepeatedTest and @ParameterizedTest.

Actually, since the use of JUnit Jupiter annotations as meta-annotations will likely become more common over time, finding such meta-annotations would be a good idea anyway. For example, I often create custom composed annotations for @ParameterizedTest and a particular argument source (e.g., @MethodSource).

Edit: at a glance, it looks like AnnotationUtil does not search recursively for meta-annotations.

[philwebb]

Unfortunately checkstyle works only on the AST so finding meta-annotations isn't an option. I've just added them directly instead.