add support for vendor specific mime types in serialization/deserialization in ruby

[baywet]

more details at #1461

The factories registries for parse node and serialization need to to be updated to perform a staggered lookup.

1. The headers can technically contain multiple content mime types separated by ;, so we need to split and trim first.
2. The mime type can be vendor specific application/vendor.product+json, we should try an exact match and return it if we find a factory.
3. If we don't, we should remove the vendor part vendor.product and lookup the registry with a non-vendor specific entry, return the factory we find if any.
4. If we haven't found anything, throw an error (like we do today)