Generate ResourceType classes based on OCF-Spec version

[NZSmartie]

It makes sense to use existing OIC schemas. using them in C# would require some runtime processing of the schemas, or compile-time generation of class objects.

• Using provided base schemas, support reading any oic.r.* schema
• Create a C# class file that reflects the input schema
• Provide metadata for consumption through the API such as (read-only, valid ranges, etc)
• Write tests to ensure future changes do not break builds