CMake

Make qHash compatible with Qt6 signature #171

Job	Run time
build (ubuntu-latest, Debug, static, 5.12, x86_64)	1m 6s
build (ubuntu-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 44s
build (windows-latest, Debug, static, 5.12, x86_64)	1m 47s
build (ubuntu-latest, Release, shared, 5.12, x86_64)	1m 41s
build (ubuntu-latest, Debug, shared, 5.12, x86_64)	1m 20s
build (ubuntu-latest, Release, static, 6.6.0, x86_64;arm64)	2m 8s
build (windows-latest, Release, static, 5.12, x86_64)	1m 3s
build (macos-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 10s
build (ubuntu-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 52s
build (ubuntu-latest, Release, static, 5.12, x86_64)	1m 41s
build (windows-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 11s
build (windows-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 23s
build (windows-latest, Release, static, 6.6.0, x86_64;arm64)	1m 33s
build (windows-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 52s
build (macos-latest, Debug, static, 5.12, x86_64)	35s
build (macos-latest, Debug, shared, 5.12, x86_64)	33s
build (macos-latest, Release, static, 5.12, x86_64)	41s
build (macos-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 35s
build (windows-latest, Debug, shared, 5.12, x86_64)	53s
build (macos-latest, Release, shared, 5.12, x86_64)	32s
build (windows-latest, Release, shared, 5.12, x86_64)	1m 1s
build (macos-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 12s
build (macos-latest, Release, static, 6.6.0, x86_64;arm64)	1m 8s
build (ubuntu-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 46s
	31m 27s

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