enum 추가, cors 설정 추가

src/main/java/com/kamco/cd/kamcoback/common/api/CommonController.java

@@ -0,0 +1,15 @@
+package com.kamco.cd.kamcoback.common.api;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/common")
+public class CommonController {
+
+  @GetMapping("/sheets/{id}")
+  public void getSheetList() {
+
+  }
+}