Merge pull request #491 from WilhelmusLab/490-add-watershed-workflows #1106

Job	Run time
Julia lts - ubuntu-latest - x64 - push	14m 49s
Julia lts - macos-latest - arm64 - push	18m 53s
Julia 1 - ubuntu-latest - x64 - push	17m 20s
Julia 1 - macos-latest - arm64 - push	17m 9s
	1h 8m 11s

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