[Enhancement] Code Generator failure checks

[gjroelofs]

AFAIK, at the moment the (Unity) code generation first deletes the generated code folder as it assumes that execution of the code generation will happen without faults or errors.

I suggest that we first write to a temporary folder and not replace/remove the code generated folder without confirmation of a successful execution of the Code Generator. (Exceptions / errors)

[sschmid]

That totally makes sense. I will definitely consider your idea in the new version of the code generator!