C++: Arrow to Parquet Schema conversion

[asfimport]

For writing Parquet files we need to transform Arrow's schema into one for parquet-cpp.

Reporter: Uwe Korn / @xhochy
Assignee: Uwe Korn / @xhochy

_{Note: This issue was originally created as ARROW-92. Please see the migration documentation for further details.}

[asfimport]

Uwe Korn / @xhochy:
PR: #68

[asfimport]

Uwe Korn / @xhochy:
To make the actual schema conversion complete, we probably need the physical structure too as Arrow schemas only care about logical types whereas Parquet schema is about logical and physical types.

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 68
#68