DOC: Add open source diagram tooling #2344

Job	Run time
should run ci	7s
cache-pixi-lock	1m 5s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	0s
build-and-upload-nightly-parcels	0s
Unit tests: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests	0s
TypeChecking: pixi run typing	0s
merge-test-artifacts	0s
	1m 12s

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