codeintel: Auto-inference sandbox - Type transformation

Created by: efritz

We should add a Lua layer between the generate (et al) input and the invocation of the call. This will allow us to return, for example, a paths parameter that is an actual Lua table (respecting the intuitive metamethods and builtin behaviors) rather than an opaque box of userdata that happens to be countable and indexable.

This issue addressed this feedback.