Add Conda build Pixi task (#2529) #2328

Job	Run time
should run ci	5s
cache-pixi-lock	1m 36s
build-and-upload-nightly-parcels	1m 25s
Unit tests: windows \| pixi run -e test tests	7m 13s
Unit tests: ubuntu \| pixi run -e test-minimum tests	4m 5s
Unit tests: ubuntu \| pixi run -e test-py311 tests	3m 54s
Unit tests: ubuntu \| pixi run -e test tests	3m 8s
Unit tests: ubuntu \| pixi run -e test-py313 tests	4m 6s
TypeChecking: pixi run typing	0s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	0s
merge-test-artifacts	0s
	25m 32s

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