Update compiling instructions for Apple Silicon

[KapJI]

Setting this variable actually breaking build on my Macbook with Apple Silicon.

I get this error:

Detecting compiler hash for triplet arm64-osx...
error: while detecting compiler information:
The log file content at "/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/buildtrees/detect_compiler/stdout-arm64-osx.log" is:
-- Configuring arm64-osx-rel
CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:112 (message):
    Command failed: /opt/homebrew/Cellar/cmake/3.27.7/bin/cmake /Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/scripts/detect_compiler -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/packages/detect_compiler_arm64-osx -DCMAKE_SYSTEM_NAME=Darwin -DBUILD_SHARED_LIBS=OFF -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/scripts/toolchains/osx.cmake -DVCPKG_TARGET_TRIPLET=arm64-osx -DVCPKG_SET_CHARSET_FLAG=ON -DVCPKG_PLATFORM_TOOLSET=external -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY=ON -DCMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_SKIP=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DVCPKG_APPLOCAL_DEPS=OFF -DCMAKE_TOOLCHAIN_FILE=/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION=ON -DVCPKG_CXX_FLAGS= -DVCPKG_CXX_FLAGS_RELEASE= -DVCPKG_CXX_FLAGS_DEBUG= -DVCPKG_C_FLAGS= -DVCPKG_C_FLAGS_RELEASE= -DVCPKG_C_FLAGS_DEBUG= -DVCPKG_CRT_LINKAGE=dynamic -DVCPKG_LINKER_FLAGS= -DVCPKG_LINKER_FLAGS_RELEASE= -DVCPKG_LINKER_FLAGS_DEBUG= -DVCPKG_TARGET_ARCHITECTURE=arm64 -DCMAKE_INSTALL_LIBDIR:STRING=lib -DCMAKE_INSTALL_BINDIR:STRING=bin -D_VCPKG_ROOT_DIR=/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg -DZ_VCPKG_ROOT_DIR=/Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg -D_VCPKG_INSTALLED_DIR=/Users/sayfutdinov/Project/github/EternalTerminal/build/vcpkg_installed -DVCPKG_MANIFEST_INSTALL=OFF -DCMAKE_OSX_ARCHITECTURES=arm64
    Working Directory: /Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/buildtrees/detect_compiler/arm64-osx-rel
    Error code: 1
    See logs for more information:
      /Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/buildtrees/detect_compiler/config-arm64-osx-rel-CMakeCache.txt.log
      /Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/buildtrees/detect_compiler/config-arm64-osx-rel-out.log
      /Users/sayfutdinov/Project/github/EternalTerminal/external/vcpkg/buildtrees/detect_compiler/config-arm64-osx-rel-err.log

Call Stack (most recent call first):
  scripts/cmake/vcpkg_configure_cmake.cmake:340 (vcpkg_execute_required_process)
  scripts/detect_compiler/portfile.cmake:18 (vcpkg_configure_cmake)
  scripts/ports.cmake:147 (include)



error: vcpkg was unable to detect the active compiler's information. See above for the CMake failure output.

Without this variable it builds fine.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2f8dfdd) 73.47% compared to head (b7abd6b) 73.25%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #606      +/-   ##
==========================================
- Coverage   73.47%   73.25%   -0.22%     
==========================================
  Files          50       50              
  Lines        3042     3051       +9     
==========================================
  Hits         2235     2235              
- Misses        807      816       +9     

see 8 files with indirect coverage changes

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[MisterTea]

Thanks!