Methane Asteroids v0.7.0

Methane Asteroids now support build for iOS and tvOS devices and simulators:

• External libraries:
  • MethaneKit was updated to v0.7.0 release with iOS and tvOS support.
• Build infrastructure:
  • Added iOS toolchain Externals/iOS-Toolchain.cmake from iOS-CMake project to enable iOS & tvOS build configuration with CMake.
  • Included MethaneGlobalOptions.cmake in the root CMakeLists.txt for correct setup of Methane global options.
  • Extended Build/Unix/Build.sh script to support iOS & tvOS builds via new command-line arguments --apple-platform, --apple-dev-team and --apple-deploy-target.
  • Added iOS and tvOS configurations to CMakePresets.json.
  • Added iOS and tvOS Simulator builds to GitHub Actions.
  • Added CLion cmake configurations for iOS and tvOS.
  • Added iOS and tvOS build instructions to Build/README.md.