Create new, cross platform momo-comander named modtool

- Moved old modtool into mibtool (template code for mib12 modules)
- Created modtool that can list enumerated mib modules and reflash
any pic12 module based on its name or address.

Functionality all comes from pymomo.cmdr but this gives it a simple
command line interface for those that want that.  More functionality
will be added as it comes online.  Currently supports just enumerating
attached modules, describing them and reflashing them.