feat(rbac): add RbacModule and RbacService with seed data and role CRUD

backend/src/rbac/rbac.module.ts

@@ -0,0 +1,21 @@
+import { Module, OnModuleInit, forwardRef } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { Permission, Role, User } from '../entities';
+import { RbacService } from './rbac.service';
+import { AuthModule } from '../auth/auth.module';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([Permission, Role, User]),
+    forwardRef(() => AuthModule),
+  ],
+  controllers: [],
+  providers: [RbacService],
+  exports: [RbacService],
+})
+export class RbacModule implements OnModuleInit {
+  constructor(private rbacService: RbacService) {}
+  async onModuleInit() {
+    await this.rbacService.seedData();
+  }
+}