`csv_async`'s deserializer seems to only emit a few specific types
to the supplied visitor. Namely strings and 64 bit numbers. I was
not able to figure out why some numbers where considered floats.
So each visitor for the hash types needs to implement all of those
data types and convert them, if necessary.
Since I now found a way to obtain a version of the Oodle library
compiled for Linux, I don't need to bother with Wine anymore, and
can instead load the library directly.
This removes the need for the extra utility completely.
I still have to load the library at runtime, though, as Rust only
supports static linking, and I probably don't have a lincense to do
that with Oodle.
