feat(gooddata-pipelines): support composite key references and optional WDF #1751

Job	Run time
Collect changes / collect-changes	11s
Python tests / types-check	18s
Python tests / unit-tests (py313)	2m 40s
Python tests / unit-tests (py311)	3m 39s
Python tests / lint-and-format-check	11s
Python tests / unit-tests (py314)	2m 57s
Python tests / docs-scripts-tests	18s
Python tests / unit-tests (py310)	3m 25s
Python tests / unit-tests (py312)	2m 45s
status-check	2s
	16m 26s

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