Build

Add cmake build system #720

Job	Run time
oldschool (rockylinux, 9, debug)	5m 15s
ubuntu (22.04)	7m 13s
oldschool (rockylinux, 9, release)	5m 17s
macOS (latest, 3.11, 5.12.*, debug)	5m 23s
macOS (latest, 3.9, 5.9.*, release)	4m 46s
windows (win64_msvc2019_64, 3.13, x64, 5.15.*, PythonQtCore PythonQtGui PythonQtMultimedia)	4m 16s
macOS (latest, 3.9, 5.9.*, debug)	11m 21s
windows (win64_mingw73, 3.10, 5.12.*, x64)	5m 45s
windows (win64_msvc2017_64, 3.6, x64, 5.11.*)	5m 16s
windows (win32_mingw53, 3.6, x86, 5.11.*)	7m 11s
ubuntu (24.04)	7m 22s
	1h 9m 5s

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