First prototype for sub-only awaiting feedback

Added a new section to data.json to check for sub requirement to use the
command, kinda dirty but it works so I'll try to work more on it to
pretty it up
New format

responses: {
"whatever": {
"access": "sub",
"response": "whatever_x"
}
}
Though it breaks generate_docstring
Fix `generate_docstring`.

Was it that hard?