feat: add column total header indexes to DataFrameMetadata #929

Job	Run time
Collect changes / collect-changes	7s
Python tests / unit-tests (py313)	1m 16s
Python tests / unit-tests (py39)	1m 16s
Python tests / unit-tests (py310)	1m 16s
Python tests / lint-and-format-check	43s
Python tests / unit-tests (py311)	1m 17s
Python tests / types-check	1m 16s
Python tests / unit-tests (py312)	1m 16s
status-check	3s
	8m 30s

Provide feedback