feat: add cors configuration (#176)

* feat: add cors configuration

* refactor: add generic type to ResponseEntity

Author: woowabrie

src/main/java/wooteco/subway/WebConfig.java

@@ -0,0 +1,13 @@
+package wooteco.subway;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**").allowedMethods("*").allowedOriginPatterns("*");
+    }
+}

src/main/java/wooteco/subway/ui/StationController.java

@@ -33,7 +33,7 @@ public ResponseEntity<List<StationResponse>> showStations() {
     }
 
     @DeleteMapping("/stations/{id}")
-    public ResponseEntity deleteStation(@PathVariable Long id) {
+    public ResponseEntity<Void> deleteStation(@PathVariable Long id) {
         return ResponseEntity.noContent().build();
     }
 }