Add different backend roles about fusio

[chriskapp]

With the 0.9.2 release we have created a UserContext which is passed to every service so it would be easy to write a right check. But this would be an all or nothing right check it would be not possible to allow only specifc records. Also we would need to have a right panel where a admin can configure the rights of each user.

[chriskapp]

We should create a new table fusio_user_rights which has the columns resource, resource_id, view, create, update, delete. Through this we could set global rights if the resource_id is NULL or specific rights if we set a concrete id. The resource column basically is a string which represents a concrete resource. For the backend we could create resources like: action, routes, schema, etc.

[EvoPulseGaming]

Should cross reference the idea of having child users of a parent user. with inherited scopes....

As creating multiple installations was one of my own possible solutions (still went with managing my own copy of the user database)

[chriskapp]

The next release will include specific scopes for the backend i.e.:

Through this it will be possible to allow a user only specific rights to the backend. Through this it is possible to create different roles by allowing specific scopes for a user. Also if a user has i.e. the backend scope he automatically has access to all backend.* sub scopes.