fix link with deps pdb availability

fix link with deps pdb availability

Unlike debugger, linker is currently not able to read the pdb files,
even if they're put onto path. As result, a lot of LNK4099 warnings
and in some cases also missing debug information in the end binaries.
This is solved by copying the relevant pdb into the build dir, which
then can be picked up on link time. This also leads to the inclusion
of those pdb files into the debug package, so symbols won't be missed
in crash dumps. As otherwise the debug info for dependencies is only
contained in the dependency packages.