Add Enzyme tests #208

Job	Run time
test (1.6, ubuntu-latest, x64, Others)	4m 1s
test (1.6, ubuntu-latest, x64, Enzyme)	22m 3s
test (1.6, ubuntu-latest, x64, ForwardDiff)	22m 5s
test (1.6, ubuntu-latest, x64, Tracker)	18m 22s
test (1.6, ubuntu-latest, x64, ReverseDiff)	22m 6s
test (1.6, ubuntu-latest, x64, Zygote)	22m 3s
test (1, ubuntu-latest, x64, Others)	3m 47s
test (1, ubuntu-latest, x64, Enzyme)	21m 58s
test (1, ubuntu-latest, x64, ForwardDiff)	22m 0s
test (1, ubuntu-latest, x64, Tracker)	13m 7s
test (1, ubuntu-latest, x64, ReverseDiff)	14m 50s
test (1, ubuntu-latest, x64, Zygote)	21m 57s
test (1, macOS-latest, x64, Others)	4m 8s
test (1, macOS-latest, x64, Enzyme)	22m 4s
test (1, macOS-latest, x64, ForwardDiff)	22m 6s
test (1, macOS-latest, x64, Tracker)	12m 26s
test (1, macOS-latest, x64, ReverseDiff)	9m 28s
test (1, macOS-latest, x64, Zygote)	21m 48s
	5h 0m 19s

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