added scheduled selfchecks with all available project imports to CI #11

Job	Run time
build	47s
selfcheck (cmake.output/compile_commands.json)	26s
selfcheck (cppcheck.sln)	2m 44s
selfcheck (gui/gui.cppcheck)	24s
selfcheck (cppcheck.cppcheck)	5m 37s
	9m 58s

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