Add docstrings to inet.py
Add docstrings to inet.py

- formatting for readability
- add docstrings for types and form props
- add / modify 'ro' / 'req' parameters
- enforce convention of 'ro', 'req', 'defval' at end of prop details
vertexproject/synapse,vertexproject/synapse,vivisect/synapse,vertexproject/synapse