[ ] Add ExtensionName.pdb to send list if it exists in scripts/
[ ] Preserve original filenames for both, .dll and .pdb
[x] CMake function for easy extension setup (modify .pdb path, strip)
While this is part of engine build now (PdbSetup.cmake), it includes /OPT:REF which is completely unrelated but for some reason refused to work when moved outside - needs fix