* Set CXX flags manually to specify the `/MT` flag explicitly; this is
needed as compilations of moc objects apparently don't pick-up the
variable `CMAKE_MSVC_RUNTIME_LIBRARY` and instead use what the Qt build
had used (which breaks the compilation when using a shared Qt build with
this setup which otherwise prefers static libraries)
* Set build type explicitly to release as otherwise a debug build would be
made (but we have `win-x64-msvc-static-debug` for that)
* Specify the VCPKG target triplet to prefer static libs
* Disable the Qt Quick GUI for now; otherwise passwordmanager is trying to
pull-in kirigami
* Remove most hardcoded paths for dependencies; with the correct VCPKG
target triplet those paths can be auto-detected (except for CppUnit)
Martchus