Build

Move irrelevant code out of Core.cpp #10399

Job	Run time
build_test_headless_alpine	13m 38s
build-uwp	8m 46s
build-windows (x64)	10m 14s
build (ubuntu-latest, test, clang, clang++, ./b.sh --headless --unittest, clang-normal)	4m 44s
build-windows (ARM64)	10m 16s
build (ubuntu-latest, gcc, g++, ./b.sh --headless --unittest, gcc-normal)	4m 13s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=arm64-v8a UNITTE...	9m 32s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=armeabi-v7a UNIT...	8m 22s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=x86_64 UNITTEST=...	9m 47s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=arm64-v8a OPENXR...	9m 23s
build (ubuntu-latest, android, clang, clang++, ./b.sh --libretro_android ppsspp_libretro, android...	5m 41s
build (ubuntu-latest, qt, gcc, g++, ./b.sh --qt, qt)	4m 56s
build (ubuntu-latest, libretro, gcc, g++, make -C libretro -f Makefile -j2, gcc-libretro)	3m 4s
build (ubuntu-latest, libretro, clang, clang++, make -C libretro -f Makefile -j2, clang-libretro)	2m 53s
build (macos-latest, test, clang, clang++, ./b.sh --headless --unittest --fat --no-png --no-sdl2,...	10m 7s
build (macos-latest, ios, clang, clang++, ./b.sh --ios, ios)	4m 43s
test (ubuntu-latest)	1m 28s
test (macos-latest)	1m 26s
test-windows	1m 9s
	2h 4m 22s

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