Create scope definition

[MBeuttler]

To process a scope request on the server and to show meaningful and readable scope descriptions to the user, we will need a a scope definition.

Define a json schema to define scopes with attributes like:

• name
• description
• requesting component
• param1
• param2
• ....

At some point we will have to model a scope like:
"The {TDM-Component} wants to transfer {X} Bitcoins from {user}'s TDM Account to {Bitcoin Address}, will you approve that?"