More SimpleValue types are handled

[fbrosseau]

• Add ToArray<T> to ClrDynamic
• Add support for X509Certificate(2)
• Add support for IPEndPoint

[JeffCyr]

Thanks for thoses changes, there is some nice ideas.

However I don't want to add too much stuff in SimpleValue, theses should only be primitive types, I added some more common types (TimeSpan, DateTime, etc) but it's a bit of a stretch already. An extensible ClrDynamic.ConvertTo<T>() method could make more sense here to add more complex types.

ToArray

I think ClrDynamic.ToArray should limit itself to primitive array types for now. I don't like the idea of mixing Visualizers in there.