feat: 프론트엔드 분리로 인한 CORS 설정 추가

src/main/kotlin/roomescape/common/config/CorsConfig.kt

@@ -0,0 +1,16 @@
+package roomescape.common.config
+
+import org.springframework.context.annotation.Configuration
+import org.springframework.web.servlet.config.annotation.CorsRegistry
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer
+
+@Configuration
+class CorsConfig : WebMvcConfigurer {
+    override fun addCorsMappings(registry: CorsRegistry) {
+        registry.addMapping("/**")
+            .allowedOrigins("http://localhost:5173")
+            .allowedMethods("GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS")
+            .allowedHeaders("Authorization", "Content-Type")
+            .maxAge(3600) // 1 hour
+    }
+}