Add sql column names to csv column mapping

[chinandrew]

Convert the columns_and_types variable from a list of (csv headers, data types) to a list of (csv headers, sql column name, data type) and then use that mapping later so the specification is not order specific. This PR is for the covid_hosp folder.

This also resolves two issues I stumbled upon:

1. the ddl documentation was missing the new rows
2. the state_daily files were merged after the pytest compatibility PR and thus would fail due to missing imports

TODO:

• add a test that fails on main due to column order but passes here. ended up just rearranging some columns that caused main integration tests to fail but pass on this branch

Fixes #387

[krivard]

Optional refinement -- lmk your verdict and I can merge or hold off.