Add .NET 6 minimal API example

[cartermp]

Fixes #134

[cartermp]

Argh, I don't think circleCI has an up to date .NET image :(

Creating a dedicated VM with windows-server-2019-vs2019:stable image

Since it relies on visual studio-based images rather than just pulling in the .NET docker image, it might be more complicated to support .NET 6 in this repo

[bdarfler]

@cartermp maybe we need a custom docker image? https://circleci.com/docs/2.0/custom-images/

[github-actions]

Marking this PR as stale because it has been open 30 days with no activity. Please add a comment if this PR is still relevant; otherwise this PR will be automatically closed in 7 days.

[cartermp]

will probably do this later, circle is still taking their time

[cartermp]

whelp https://discuss.circleci.com/t/cant-see-to-find-an-orb-with-support-for-dotnet-6/42652/4

Looks like Circle still haven't updated any orbs to support .NET 6, the LTS that's been out since November 2021.

Contemplating using the workaround posted in the form like there so we have samples using the LTS release when we go GA.