Merge topic 'doc-xcframeworks-stubs-apple'

e831eef933 Help: Note case where IMPORTED_IMPLIB isn't needed for (xc)frameworks
01735badee Help: XCFrameworks and stubs are supported on all Apple, not just macOS
6ac50df591 Help: Add missing versionadded directives for IMPORTED_IMPLIB

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !9058