chore: class-transformer 의존성 추가

Author: Tolerblanc

backend/package.json

@@ -23,6 +23,7 @@
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
     "@nestjs/platform-express": "^10.0.0",
+    "class-transformer": "^0.5.1",
     "class-validator": "^0.14.1",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.8.1",

backend/yarn.lock

@@ -1721,6 +1721,11 @@ cjs-module-lexer@^1.0.0:
   resolved "https://registry.yarnpkg.com/cjs-module-lexer/-/cjs-module-lexer-1.4.1.tgz#707413784dbb3a72aa11c2f2b042a0bef4004170"
   integrity sha512-cuSVIHi9/9E/+821Qjdvngor+xpnlwnuwIyZOaLmHBVdXL+gP+I6QQB9VkO7RI77YIcTV+S1W9AreJ5eN63JBA==
 
+class-transformer@^0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/class-transformer/-/class-transformer-0.5.1.tgz#24147d5dffd2a6cea930a3250a677addf96ab336"
+  integrity sha512-SQa1Ws6hUbfC98vKGxZH3KFY0Y1lm5Zm0SY8XX9zbK7FJCyVEac3ATW0RIpwzW+oOfmHE5PMPufDG9hCfoEOMw==
+
 class-validator@^0.14.1:
   version "0.14.1"
   resolved "https://registry.yarnpkg.com/class-validator/-/class-validator-0.14.1.tgz#ff2411ed8134e9d76acfeb14872884448be98110"