Added a service to list packages

[stuartcrouch]

This will list out packages with the name, number and GUID.
I have another service coming that will build the package for the number you specify

[aaronpowell]

I'm not sure if this (and #96) would fit as part of the core of Chauffeur for v7 or it'd be better as a plugin (either part of ExternalPackages or just a stand alone completely).

I've nearly completed the migration of Chauffeur to v8 and the packaging engine is quite changed so I'm rather hesitant about adding something that is so heavily tied to it into the core only to have to migrate it shortly.

[stuartcrouch]

I'm not sure if this (and #96) would fit as part of the core of Chauffeur for v7 or it'd be better as a plugin (either part of ExternalPackages or just a stand alone completely).

I've nearly completed the migration of Chauffeur to v8 and the packaging engine is quite changed so I'm rather hesitant about adding something that is so heavily tied to it into the core only to have to migrate it shortly.

In that case I'm out. I have no idea how to code in f# and its too large a task to take on although I had hoped to share what I'd done with the community

I'll still use what I've learned, but I dont think I can make this a sharable product?

[aaronpowell]

You can create your own NuGet package which contains the code (and has the dependency of Chauffeur) because Chauffeur just picks up everything in the bin folder to load, so there's no need to discard it.