Add implementation scaffolding to C# service emitter

[markcowl]

This includes the following changes:

• Make controllers concrete, partial classes
• Add constructor to use ASP.Net dependency injection to find business logic implementation
• Make the BL implementation property virtual

This also includes the following new collateral

• Library files for type initialization and serialization in MFD scenarios
• Business logic implementation
• Registration class for adding business logic and dependent services to the DI registry
• Startup class to call the registration

est: 5