Developer scripts - Submodule init, Fix Nightly build #331

Job	Run time
build-emscripten (emscripten)	3m 22s
build-linux64 (linux64, 64gcc6)	2m 23s
build-macos (osx, xcode)	1m 2s
build-ios-tvos (ios, macos)	1m 18s
build-macos (osx, makefiles)	1m 29s
build-ios-tvos (tvos, macos)	5m 49s
build-msys2 (mingw64)	5m 49s
build-vs2022 (x64)	4m 45s
build-vs2022 (ARM64)	4m 56s
rpi-build (armv6l, armhf, arm-linux-gnueabihf, 1)	2m 12s
build-vs2022 (ARM64EC)	5m 30s
rpi-build (aarch64, arm64, aarch64-linux-gnu, 1)	1m 45s
	40m 20s

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