csv reader does not detect ISO date strings as timestamps #1060

Describe the bug
If a column has dates like "2021-12-19 13:12:30.921" they are not treated as dates/timestamps by the reader (unlike in other clients like python or javascript)

To Reproduce
I ran into this trying to run csv2parquet on a csv with dates formatted as above
https://github.com/domoritz/csv2parquet

Expected behavior
Expect to get TIMESTAMP values