Implement aspdotnet core Produces, Consumes, partial controller

Created by: grmcdorman

Produces: Add [Produces("a/b", "c/d")] to actions where applicable Consumes: Likewise, add [Consumes("a/b", "c/d")]. Requires detecting "/ as ASP doesn't like that.

Input formatters and output formatters to translate to/from System.IO.Stream and byte [] added for "application/octet-stream" and "text/plain".

Partial controller: is controlled by usePartialControllerClass. Defaults to 'true'. NOT tested with it off.

Related issues: #1327 [C#] aspdotnetcore (C# server) generation does not support byte/binary body #426 [Server] support interface and implementation classes for API controllers

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Description of the PR

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