feat: UnprocessableEntityException 추가

src/exception/client-exception/index.ts

@@ -6,3 +6,4 @@ export { NotFoundException } from './not-found-exception';
 export { TokenExpiredException } from './token-expired-exception';
 export { UnauthorizedException } from './unauthorized-exception';
 export { ConflictException } from './conflict-exception';
+export { UnprocessableEntityException } from './unprocessable-entity-exception';

src/exception/client-exception/unprocessable-entity-exception.ts

@@ -0,0 +1,8 @@
+import { HttpState } from '../../http-client';
+import { ClientException } from './client-exception';
+
+export class UnprocessableEntityException extends ClientException {
+  constructor(message = 'UNPROCESSABLE ENTITY', cause?: Error) {
+    super(HttpState.UNPROCESSABLE_ENTITY, message, cause);
+  }
+}

src/exception/index.ts

@@ -7,6 +7,7 @@ export {
   TokenExpiredException,
   UnauthorizedException,
   ConflictException,
+  UnprocessableEntityException,
 } from './client-exception';
 export { CustomException } from './custom-exception';
 export { DataException, InternalServerException, ServerException, UnknownException } from './server-exception';