Merge pull request #172 from Artoria2e5/patch-1

make the GUID regex case-insensitive

add test for non-GUID keys

fix GUID checking

reg.cpp: check for guid format

pch: add Regex include

remove vcpkg-libarchive-static.patch

cache vcpkg build result

fix vcpkg libarchive link error

add some unit tests

fix CMake config for the shell extension

improve lib include directory structure

make internal functions and global variables static

move root directory detection to fs_writer

avoid initializing COM multiple times