feat : home API 추가

놀이터(예제 코드 작성)/spring-security/src/main/kotlin/com/banjjoknim/playground/domain/home/HomeApiController.kt

@@ -0,0 +1,13 @@
+package com.banjjoknim.playground.domain.home
+
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class HomeApiController {
+
+    @GetMapping("/home")
+    fun home(): String {
+        return "<h1>home</h1>"
+    }
+}