feat: add add new config strategy to frontend

backend/src/config/dto/adminConfig.dto.ts

@@ -0,0 +1,23 @@
+import { Expose, plainToClass } from "class-transformer";
+import { ConfigDTO } from "./config.dto";
+
+export class AdminConfigDTO extends ConfigDTO {
+  @Expose()
+  default: string;
+
+  @Expose()
+  secret: boolean;
+
+  @Expose()
+  updatedAt: Date;
+
+  from(partial: Partial<AdminConfigDTO>) {
+    return plainToClass(AdminConfigDTO, partial, { excludeExtraneousValues: true });
+  }
+
+  fromList(partial: Partial<AdminConfigDTO>[]) {
+    return partial.map((part) =>
+      plainToClass(AdminConfigDTO, part, { excludeExtraneousValues: true })
+    );
+  }
+}