[NOISSUE] feat: index path 를 받는 컨트롤러를 구현한다

tecobrary-core-api/src/main/java/com/woowacourse/tecobrary/common/dto/CoreApiResponse.java

@@ -25,6 +25,10 @@ public static <T> CoreApiResponse<T> success(T data) {
         return new CoreApiResponse<>("200", "", data);
     }
 
+    public static <T> CoreApiResponse<T> success(String message) {
+        return new CoreApiResponse<>("200", message, null);
+    }
+
     public static <T> CoreApiResponse<T> fail(String code, String message) {
         return new CoreApiResponse<>(code, message, null);
     }

tecobrary-core-api/src/main/java/com/woowacourse/tecobrary/web/HomeController.java

@@ -1,16 +1,23 @@
 package com.woowacourse.tecobrary.web;
 
+import com.woowacourse.tecobrary.common.dto.CoreApiResponse;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.view.RedirectView;
 
 @RestController
-@RequestMapping("/api/v2")
+@RequestMapping
 public class HomeController {
 
-    @GetMapping
-    public ResponseEntity index() {
-        return ResponseEntity.ok("Hello. This is Tecobrary API v2. Welcome !");
+    @GetMapping("/")
+    public RedirectView redirect() {
+        return new RedirectView("/api/v2");
+    }
+
+    @GetMapping("/api/v2")
+    public CoreApiResponse index() {
+        return CoreApiResponse.success("Hello. This is Tecobrary API v2. Welcome !");
     }
 }