Add CheckResult to KRecycler's childWith

[Mexator]

My team quite often make mistakes using childWith. They write something like:

myKRecycler.childWith<HeaderKItem> {
    doesNotExist()
}

I added a lint rule to our project and now I wan't to discuss, maybe it worth adding CheckResult (or analogous annotation) here? This way default Android Lint rules may be used to detect such issues

[Vacxe]

@Mexator can't see any reasons to avoid this. Thanks for the contribution.