feat: add user management

backend/src/auth/dto/updatePassword.dto.ts

@@ -0,0 +1,8 @@
+import { PickType } from "@nestjs/mapped-types";
+import { IsString } from "class-validator";
+import { UserDTO } from "src/user/dto/user.dto";
+
+export class UpdatePasswordDTO extends PickType(UserDTO, ["password"]) {
+  @IsString()
+  oldPassword: string;
+}