upstream KDAB and KDE ECM cmake files #57

Job	Run time
build (ubuntu-22.04, Debug, static, 5.15)	1m 1s
build (ubuntu-22.04, Debug, static, 6.6.0)	1m 24s
build (ubuntu-22.04, Debug, dynamic, 5.15)	58s
build (ubuntu-22.04, Debug, dynamic, 6.6.0)	1m 18s
build (ubuntu-22.04, Release, static, 5.15)	52s
build (ubuntu-22.04, Release, static, 6.6.0)	50s
build (ubuntu-22.04, Release, dynamic, 5.15)	38s
build (ubuntu-22.04, Release, dynamic, 6.6.0)	1m 3s
build (windows-2022, Debug, static, 5.15)	3m 21s
build (windows-2022, Debug, static, 6.6.0)	3m 19s
build (windows-2022, Debug, dynamic, 5.15)	1m 55s
build (windows-2022, Debug, dynamic, 6.6.0)	3m 59s
build (windows-2022, Release, static, 5.15)	1m 15s
build (windows-2022, Release, static, 6.6.0)	1m 32s
build (windows-2022, Release, dynamic, 5.15)	1m 39s
build (windows-2022, Release, dynamic, 6.6.0)	1m 25s
build (macos-13, Debug, static, 5.15)	1m 53s
build (macos-13, Debug, static, 6.6.0)	2m 46s
build (macos-13, Debug, dynamic, 5.15)	1m 25s
build (macos-13, Debug, dynamic, 6.6.0)	2m 46s
build (macos-13, Release, static, 5.15)	1m 11s
build (macos-13, Release, static, 6.6.0)	2m 9s
build (macos-13, Release, dynamic, 5.15)	1m 2s
build (macos-13, Release, dynamic, 6.6.0)	2m 53s
build (ubuntu-22.04, Release, dynamic, 6.6.0, llvm, shiboken6-generator==6.6.0 pyside6==6.6.0)	1m 37s
	44m 11s

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