build: set the vcpkg triplet for arm64

Author: aminya

CMakeLists.txt

@@ -71,6 +71,9 @@ if(WIN32)
   elseif(NOT "$ENV{PROCESSOR_ARCHITEW6432}" STREQUAL "")
     set(CMAKE_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITEW6432}")
     set(VCPKG_TARGET_TRIPLET "x86-windows-static")
+  elseif("$ENV{Platform}" STREQUAL "arm64")
+    set(CMAKE_SYSTEM_PROCESSOR "arm64")
+    set(VCPKG_TARGET_TRIPLET "arm64-windows-static")
   else()
     set(CMAKE_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITECTURE}")
     set(VCPKG_TARGET_TRIPLET "x64-windows-static")