Add CodeQL Workflow for Code Security Analysis #7

Job	Run time
ci (aarch64/qemu)	2m 7s
ci (arm/qemu)	2m 9s
ci (platform/stm32/f4/stm32f4-discovery)	2m 11s
ci (x86/qemu)	1m 53s
ci (x86/smp)	2m 7s
ci (x86/user_apps)	2m 8s
ci (project/qt4/x86_qemu_emboxvc)	2m 9s
ci (x86/test/lang)	2m 7s
ci (x86/test/net)	2m 8s
ci (x86/test/fs)	2m 8s
ci (x86/test/units)	2m 9s
ci (x86/test/packetdrill)	2m 7s
ci (x86/test/qt-vnc)	2m 7s
ci (sparc/qemu)	2m 8s
ci (mips/qemu)	2m 10s
ci (ppc/qemu)	2m 2s
ci (microblaze/qemu)	2m 8s
ci (usermode86/debug)	2m 8s
	38m 6s

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