Let me take a more abstract approach to your question:

First, it's not clear if your question solely concentrates on DB table dumps.

Then a module capable of parsing human readable tables wouldn't be restricted to here docs, but capable to parse any string or filehandle.

Additionally the choice of resulting data format is not obvious, it depends on the use case.

Eg see Re: Building data structure from multi-row/column table

There are plenty of small snippets in the monastery demonstrating how to parse such data.

I wouldn't know how to design a generic module which can be customized to handle all cases without requiring coding. (Taking into consideration that csv is an edge case of a table format.)