Tests

Add Mooncake and Enzyme tests for Diagonal #1382

Job	Run time
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	34m 3s
Tests (lts, windows-latest) / Julia lts - windows-latest	35m 17s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	7m 39s
Tests (1, windows-latest) / Julia 1 - windows-latest	31m 56s
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	32m 42s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	15m 15s
	2h 36m 52s

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