added scheduled selfchecks with all available project imports to CI #9

Job	Run time
build	2m 46s
selfcheck (cmake.output/compile_commands.json)	28s
selfcheck (cppcheck.cppcheck)	11s
selfcheck (cppcheck.sln)	2m 50s
selfcheck (gui/gui.cppcheck)	23s
	6m 38s

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