Add missing project files #4

Job	Run time
install-build-and-test (windows-latest, Visual Studio 17 2022)	24m 34s
build-and-test (windows-latest, Visual Studio 17 2022)	8m 38s
install-build-and-test (ubuntu-latest, Ninja)	14m 54s
build-and-test (ubuntu-latest, Ninja)	2m 15s
	50m 21s

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