Property directive compilation extensibility improvements

[Mylan719]

The generation of control wrapper type for markup controls with properties was moved to PropertyDeclarationDirectiveCompiler and ResolvedPropertyDeclarationDirectiveCompiler.
The reason is that on VS Extension side it is required to generate dynamic type with the control properties. This makes implementing intellisense easier.

now the compilation goes like this:

• compile @import directives
• based on @baseType directive with imports create intermediate wrapper type
• Compile @property directives and if any generate custom type based on intermediate wrapper type
• use new wrapper type down the line