Add filesystem support to Emscripten config (#8483) #1680

Job	Run time
build-emscripten (emscripten)	5m 44s
build-android (android, x86_64)	7m 36s
build-android (android, arm64-v8a)	8m 25s
build-macos (osx, xcode)	4m 39s
build-msys2 (mingw64)	13m 56s
build-msys2 (ucrt64)	14m 46s
build-android (android, armeabi-v7a)	8m 35s
rpi-build (armv6l, armhf, arm-linux-gnueabihf, 1)	5m 24s
build-macos (osx, makefiles)	5m 13s
build-vs2022 (x64)	13m 4s
rpi-build (aarch64, arm64, aarch64-linux-gnu, 1)	7m 25s
build-vs2022 (ARM64)	12m 59s
build-msys2 (clang64)	8m 26s
build-ios-tvos (ios, macos)	4m 16s
build-linux64 (linux64, 64gcc6)	10m 12s
build-ios-tvos (tvos, macos)	5m 49s
build-vs2022 (ARM64EC)	13m 59s
	2h 30m 28s

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