Windows MSVC debug information (pdb files) are not installed

If you download any of the CI artifacts, or just grep through the build logs, you'll notice that we don't install .pdb files, and thus not package them.

We should fix that.

Make sure we install qml plugin debug info as well.

Upstream issue
https://gitlab.kitware.com/cmake/cmake/-/issues/18393

Stack overflow answer which doesn't work for all cases (static builds, non linker produced pdb files)
https://stackoverflow.com/questions/40860435/how-to-get-cmake-to-install-pdb-files-for-targets