Implements two-stage PGO build system with CMake integration and
automated build scripts for Windows, Linux, and macOS. Supports
MSVC, GCC, and Clang compilers.
PGO enables runtime profiling-based optimizations for improved
emulator performance. Includes helper scripts to streamline the
build workflow and resolve platform-specific issues.
Signed-off-by: Zephyron <zephyron@citron-emu.org>