(csv) Add JAX-RS Provider implementation for CSV module

[cowtowncoder]

(from FasterXML/jackson-dataformat-csv#35 @ffbit)

It'd be good to have the jackson-jaxrs-cvs-provider derived from this artifact.

[cowtowncoder]

(comment by @TuomasKiviaho)

crafted my own which was mostly just copy/pasting of the json-provider and overwriting of the readFrom(/writeTo) method(s) using POJO approach for the schema. readValue works fine for SimpleType, but it seems that MappingIterator via readValues is currently the only option for CollectionLike/ArrayType. Could there be a detection in schemaFor(JavaType) for this and a corresponding CsvParser.Feature (for instance) that enables outputting of POJOs inside of collections/arrays(/maps?). This would suit JAX-RS better than the Jackson specific MappingIterator

[cowtowncoder]

Hmmh. Interesting thought. readValue() should work just fine for arrays/Collections, but handling of schema would need special care. And it would, I think, make sense to add special handling for these types in CsvMapper -- there is no other way to create a schema for such types.

I think I need to file a separate issue for that.

[cowtowncoder]

Dup of FasterXML/jackson-jaxrs-providers#21 actually -- will close. But at ref back for some of the ideas by @TuomasKiviaho.