Scripts for auto-generating robot packages

Initial PR for robot package generation scripts.  See package README for a quick tutorial.  Remaining items (not included in this PR) 
 * Python documentation
 * Wiki tutorials
iiuc `@(model)` can only be equal to the 'base model' here, otherwise this text (and in some other places as well) won't make sense (fi: if model == 'robot123a4gh', but base_model == 'robot123', we'll end up with a `mfg_robot123a4gh_support` pkg after running the generator). But this is probably something that can be clarified in a tutorial.