Add accelerator detection to Lmod version of EESSI initialisation #1703

Job	Run time
check_missing (2023.06, aarch64/generic)	11m 40s
check_missing (2023.06, aarch64/neoverse_n1)	12m 57s
check_missing (2023.06, aarch64/neoverse_v1)	11m 51s
check_missing (2023.06, x86_64/amd/zen2)	11m 48s
check_missing (2023.06, x86_64/amd/zen3)	12m 7s
check_missing (2023.06, x86_64/amd/zen4)	10m 9s
check_missing (2023.06, x86_64/intel/haswell)	11m 46s
check_missing (2023.06, x86_64/intel/skylake_avx512)	11m 8s
check_missing (2023.06, x86_64/generic)	12m 54s
	1h 46m 20s

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