Add a protocol so we can serialize a data type into an Object

[brianmullen]

We should add a protocol to serialize data types into an Object.

Something like:

public protocol ObjectRepresentable
{
     var objectValue: Object { get }
}

[jarsen]

Agreed. I've been trying to think of good names for this protocol for a while. I actually find ObjectConvertible a little confusing—it's not immediately clear to me if it converts into an Object, or can be converted from an Object. Same with ObjectRepresentable I wonder if we want to move towards something more along the lines of Codable and Decodable? Or Marshalable and Demarshalable. Although I'm not sure those are immediately clear either. Or real words.

[bwhiteley]

I found a number of other projects using Marshallable and Unmarshallable.
I like it.

[brianmullen]

I am fine with either one. However, if we use Codable and Decodable, I think more people would know what it is since that follows similar naming with what apple uses.

[jarsen]

I'm fine with either as well. Marshallable does fit better with the lib name though.