Add route to show roles permissions

[capella]

No description provided.

[ramonberrutti]

This abandoned Pull Request need just one change that I will like to fix in the whole project.
Never return arrays on the body. I know that existing routes return arrays, but for now, start doing well and return objects.

For this method can do something like:

{
     "permissions": [
              ...
      ]
}

or more specific

{
     "roles": {
         "permissions": [
                ...
         ]
    }
}