expose `getAnnotationsWithRepeatable()` that accepts the annotation name and the container annotation name

[Ladicek]

We currently have a method getAnnotationsWithRepeatable() that accepts the annotation name and an IndexView to lookup the container annotation. We could expose a method that accepts the container annotation name instead, which is often a known constant.

This is somewhat risky, because we cannot guarantee what the user enters and cannot check it either, but it also makes a lot of sense. Need to think about it.