It uses CMake 3.16 built-in utilities to speed up build time:
* Unity builds
* Precompiled headers
The feature is controlled via `ENABLE_FASTER_BUILD` CMake option (disabled by default).
The option avaialble only on CMake >= 3.16.
The feature is enabled per-target via `ie_faster_build` function.
Some observations:
* Don't have actual numbers for compile time, but subjectively can see
speed up locally with VS 2019.
* Unity builds gives much more effect, but has some restriction on source files,
so are not used everywhere.
* UWP fixes
* Commented code for compilation with UWP
* Current state: compiled for DESKTOP_APP
* Fixes
* Added toolchain
* Enabled ONNX imported for Windows Store
* Updated toolchain
* Fixes
* Disable ONNX in case of UWP
* Fix for Windows Driver
* Applied style check
* Dynamic loading of GetDLLDirectory symbols
* Clean-up in the toolchain
* Updated mkldnn plugin cmake
* Build dlls with INTEGRITYCHECK flag if ENABLE_INTEGRITYCHECK=ON
INTEGRITYCHECK flag enforces digital signature before loading the binary in Windows.
Also, refine /guard:cf flag enabling - MSCV, Intel, clang compilers does support /guard:cf.
