Fix CMake failing with Android NDK 27+

[frenzibyte]

I'm not well versed with the project so I'm not sure how to describe this any further, but we've encountered this error in one of our tools which relies on this repo:

CMake Warning (dev) at C:/Android/android-sdk/ndk/27.0.12077973/build/cmake/flags.cmake:46 (if):
  Policy CMP0057 is not set: Support new IN_LIST if() operator.  Run "cmake
  --help-policy CMP0057" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

  IN_LIST will be interpreted as an operator when the policy is set to NEW.
  Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.30/Modules/Platform/Android-Clang.cmake:23 (include)
  C:/Program Files/CMake/share/cmake-3.30/Modules/Platform/Android-Clang-CXX.cmake:1 (include)
  C:/Program Files/CMake/share/cmake-3.30/Modules/CMakeCXXInformation.cmake:48 (include)
  ext/SPIRV-Cross/CMakeLists.txt:31 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at C:/Android/android-sdk/ndk/27.0.12077973/build/cmake/flags.cmake:46 (if):
  if given arguments:

    "hwaddress" "IN_LIST" "ANDROID_SANITIZE"

  Unknown arguments specified
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.30/Modules/Platform/Android-Clang.cmake:23 (include)
  C:/Program Files/CMake/share/cmake-3.30/Modules/Platform/Android-Clang-CXX.cmake:1 (include)
  C:/Program Files/CMake/share/cmake-3.30/Modules/CMakeCXXInformation.cmake:48 (include)
  ext/SPIRV-Cross/CMakeLists.txt:31 (project)

It appears that since Android NDK 27, the cmake files in there require the CMP0057 policy to be set at this repo's CMakeLists file.

[CLAassistant]

All committers have signed the CLA.

[HansKristian-Work]

Seems strange to put it here since SPIRV-Cross does not use IN_LIST, but I guess it's harmless.