Add missing roles field to TenantPermissions and ResourcePermissions types

The PDP returns a roles array in getUserPermissions responses, but the
SDK types did not include it, forcing users to use type assertions.

Fixes PER-14323

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: dshoen619

src/enforcement/interfaces.ts

@@ -147,6 +147,7 @@ export interface AllTenantsResponse {
 
 interface TenantPermissions {
   permissions: string[];
+  roles?: string[];
   tenant?: {
     key: string;
     attributes: {
@@ -157,6 +158,7 @@ interface TenantPermissions {
 
 interface ResourcePermissions {
   permissions: string[];
+  roles?: string[];
   resource?: {
     type: string;
     key: string;