[Improvement] Supports to grant and revoke privilege for a role

[jerqi]

What would you like to be improved?

Supports to grant and revoke privilege for a role. If we don't have the feature, the user will be very inconvenient.

How should we improve?

Supports to grant and revoke privilege for a role

[lw-yang]

Is this about updating the role, granting or revoking permissions for securableObject to the role?