add js and css files

server.go

@@ -8,6 +8,7 @@ import (
 
 func main() {
 	e := echo.New()
+	e.Static("/", "static")
 	e.GET("/", func(c echo.Context) error {
 		return c.String(http.StatusOK, "Hello, World!")
 	})

static/index.html

@@ -133,6 +133,7 @@
     <footer id="bottom">
       <p>sanic mpd web ui - by XenGi and coon &copy; 2023</p>
     </footer>
+    <script src="index.js"></script>
   </body>
 </html>