✨ Add azure.authorization and azure.authorization.roleDefinition models.

[preslavgerchev]

Let's us query role definitions per subscription and see scopes and permissions of said roles. Example query:

azure.authorization.roleDefinitions.where(name == 'AzureML Compute Operator'){scopes permissions{allowedActions}}

[misterpantz]

@preslavgerchev the descriptions you wrote are super helpful and clear! The suggestions I made are just for consistency with our other docs. I'm making a very gradual effort for consistency. I'll get there eventually! :)
Thanks so much for the chance to review.