[POC] Github Actions support for OSX platform #55

Job	Run time
Setup and Cache Dependencies	2m 7s
Conan (unittests) (3.8)	1m 43s
Conan (integration) (3.8)	2m 55s
Conan (functional) (3.8)	15m 21s
Conan (unittests) (3.12)	52s
Conan (integration) (3.12)	2m 44s
Conan (functional) (3.12)	19m 5s
Conan (unittests) (3.13)	1m 5s
Conan (integration) (3.13)	2m 8s
Conan (functional) (3.13)	18m 53s
	1h 6m 53s

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