Feat: Improve Admin-API-Explorer tool to support WebApi Controllers in AppCode

[iJungleboy]

I'm submitting a

[x] feature request

...about

[x] admin experience UI
[x] APIs like REST

Current Behavior / Expected Behavior

With the introduction of AppCode we also created the ability to place WebApi controllers directly in the AppCode folder and makeit much more type-safe and everything.

But as of now, these don't show up in the UI and don't provide testing, so we want to enable that as well.

Your environment

• 2sxc version(s): 17.06.03