feat : add axios server

axios server 연습 추가

#resolving : #11
#ref : #1

host/src/bootstrap.tsx

@@ -4,6 +4,9 @@ import App from "./App";
 import reportWebVitals from "./reportWebVitals";
 import "./index.css";
 import { BrowserRouter } from "react-router-dom";
+import axios from "axios";
+axios.defaults.baseURL = "http://localhost:8123"; // 임시 서버 
+axios.defaults.withCredentials = true;
 
 const root = ReactDOM.createRoot(
   document.getElementById("root") as HTMLElement