…oject - Rewritten CMake build (MSVC and clang-cl, x86/x64/ARM64) and build cmake.cmd; EWDK/ESDK support; new build msix.cmd, build header.cmd, build compile commands.cmd.

…f in https://github.com/86Box/86Box/pull/6495 Fix x86/x64 performance regression with platform-specific atomics by @OBattler in https://github.com/86Box/86Box/pull/6503 A