VCPKG Manifest mode support

[dpasukhi]

Needs to extend the solution with VCPKG.
3rd-party list:

• tcl
• tk
• tbb
• draco
• qt5
• jemalloc
• ffmpeg
• freeimage
• freetype
• rapidjson
• openvr

All 3rd-party will be as a features. Means they will be optional.
*TK and TCL in latest vcpkg registry is too new. OCCT own registry will be created to take care about tk and tcl.

Tasks:

• Implement manifest and registry json files
• Extend OCCT's CMake configuration to handle new toolchain natively.
• Create a GitHub's Nuget storage for 3rd-party
• Publish registry for tcl and tk