Add Windows ARM64 build support

[Qshadow]

Description

Adds Windows ARM64 as a supported CMake and Visual Studio build target.

• Selects the arm64-windows-static vcpkg triplet when the Visual Studio platform is ARM64.
• Reuses the existing 64-bit Windows MSVC settings for ARM64 builds.
• Adds MSVC ARM64 CRC32C intrinsic support with a runtime ARMv8 CRC32 feature check instead of using x86 CPUID or SSE headers.
• Adds the missing set include needed by the ARM64 build.

This pairs with Kenix3/libultraship#1108 for ARM64 Visual Studio platform matching in the libultraship vcpkg setup.

Validation

• cmake --build build/arm64 --config Release --parallel --target soh
• Produced D:\Games\SoH\Shipwright_git_code\ARM64\Release\soh.exe with PE machine type 0xAA64, plus soh.o2r.

Build Artifacts

• soh-windows.zip
• soh-mac.zip
• soh-linux.zip