CMake

refactor(game): ob #712

Job	Run time
build-macos (x86_64, x64-osx, mono, macos.amd64)	59s
build-android (armeabi-v7a with NEON, arm-neon-android, mono, android.arm)	2m 17s
build-linux (g++-8, gcc-8, g++-8, x64-linux, mono, linux.amd64)	3m 23s
build-macos (arm64, arm64-osx, mono, macos.aarch64)	23m 44s
build-android (arm64-v8a, arm64-android, mono, android.aarch64)	2m 45s
build-windows (Win32, x86-windows-static, windows.i386)	4m 38s
build-linux (/usr/i686-linux-gnu, g++-8-i686-linux-gnu, i686-linux-gnu-gcc-8, i686-linux-gnu-g++-...	4m 24s
build-windows (x64, x64-windows-static, windows.amd64)	5m 24s
build-linux (/usr/aarch64-linux-gnu, g++-aarch64-linux-gnu, aarch64-linux-gnu-gcc, aarch64-linux-...	3m 12s
build-linux (/usr/arm-linux-gnueabihf, g++-arm-linux-gnueabihf, arm-linux-gnueabihf-gcc, arm-linu...	4m 19s
	55m 5s

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