Tests

Add Mooncake and Enzyme tests for Diagonal #1379

Job	Run time
Tests (1, windows-latest) / Julia 1 - windows-latest	14m 35s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	10m 24s
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	14m 30s
Tests (lts, windows-latest) / Julia lts - windows-latest	15m 31s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	14m 39s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	14m 31s
	1h 24m 10s

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