refactor: Make DataFrame a Vec of `Column` instead of `Series` #11367

Job	Run time
check-features	8m 34s
test (ubuntu-latest)	3m 47s
test (windows-latest)	11m 6s
check-wasm	5m 58s
integration-test (ubuntu-latest)	1m 43s
integration-test (windows-latest)	5m 25s
	36m 33s

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