Better quick-pick descriptions for .NET Core variants (ASP.NET, Console)

[philliphoff]

Users may not be clear on the differences between the .NET Core Console and ASP.NET Core variants of the Dockerfiles generated by the Add Dockerfiles to workspace task. In particular, ASP.NET Core applications are technically console applications (that just happen to bind to a well-known port and serve HTTP traffic). (Some users may still associate ASP.NET strictly with Windows and IIS despite ASP.NET Core being cross-platform.)

It may be helpful to improve the documentation around this task by highlighting the differences between each variant and when one is might be better suited than another.

[StephenWeatherford]

What do you think about adding a description to the quick pick items? They show up in the dropdown in a smaller font next to the item name. It could be added to IPlatformGeneratorInfo.

[bwateratmsft]

I like Stephen's suggestion. The "description" text shows up in a nice less-emphasized coloring (grey by default), and IMO is the perfect spot for some short descriptive text.