feat: add CASL authorization and AI configuration

apps/server/src/authorization/index.ts

@@ -0,0 +1,14 @@
+export { AuthorizationModule } from './authorization.module';
+export { CaslAbilityFactory } from './casl-ability.factory';
+export { AuthorizationService } from './authorization.service';
+export { PoliciesGuard } from './guards/policies.guard';
+export { CheckPolicies } from './decorators/check-policies.decorator';
+export { CaslAction, SubjectName, mapPermissionCode } from './casl.constants';
+export type {
+  AppAbility,
+  AppSubject,
+  AuthenticatedUser,
+  AuthPrincipal,
+  PolicyHandler,
+  IPolicyHandler,
+} from './interfaces';