Add ARM Linux GitHub workflow (#178) #107

Job	Run time
Dockerfile_openexr3-repo-root	6m 37s
Dockerfile-repo-root	4m 37s
fedora-36	2m 39s
fedora-37	2m 49s
fedora-38	2m 43s
fedora-latest	2m 58s
redhat-ubi8	4m 38s
redhat-ubi9	5m 33s
ubuntu-18-04	1m 31s
ubuntu-20-04	1m 36s
ubuntu-22-04	1m 33s
ubuntu-22-04-LTO	2m 25s
ubuntu-latest	2m 11s
ubuntu-22-04-openexr33	3m 58s
ubuntu-openexr2-shared	3m 4s
ubuntu-openexr2-static	3m 3s
	51m 55s

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