Add favicon

Author: sangwoo108

favicon.ico

@@ -28,6 +28,7 @@
       rel="stylesheet"
       href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0&icon_names=calendar_today,group,location_on,schedule"
     />
+    <link rel="icon" type="image/png" href="favicon.ico"/>
     <style>
       :root {
         --foreground: rgb(192 132 252);