add cleanup.jl #299

Job	Run time
Documentation	2m 12s
Julia 1.10 - ubuntu-latest - x64 - push	9m 29s
Julia 1 - ubuntu-latest - x64 - push	12m 2s
Julia pre - ubuntu-latest - x64 - push	12m 17s
Julia 1 - windows-latest - x64 - push	8m 0s
Julia 1 - macOS-latest - aarch64 - push	5m 9s
	49m 9s

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