feat: Add PWA splash screens and Korean font

- Add Apple touch startup images for various device sizes
- Add Euljiro font for Korean text display
- Include favicon and apple-touch-icon
- Update title to include Korean characters

Author: kochizufan

public/fonts/Euljiro-gh.woff

@@ -4,11 +4,50 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Gyeonghwon Demo</title>
+    <style>
+    @font-face {
+      font-family: "Euljiro";
+      src: url("./fonts/Euljiro-gh.woff2") format('woff2'),
+        url("./fonts/Euljiro-gh.woff") format('woff');
+    }
+    .euljiro {
+      font-family: "Euljiro";
+    }
+    </style>
     <link rel="stylesheet" href="./style.css">
+    <link rel="icon" type="image/png" sizes="196x196" href="icons/favicon-196.png">
+    <link rel="apple-touch-icon" href="icons/apple-icon-180.png">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2048-2732.jpg" media="(device-width: 1024px) and (device-height: 1366px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2732-2048.jpg" media="(device-width: 1024px) and (device-height: 1366px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1668-2388.jpg" media="(device-width: 834px) and (device-height: 1194px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2388-1668.jpg" media="(device-width: 834px) and (device-height: 1194px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1536-2048.jpg" media="(device-width: 768px) and (device-height: 1024px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2048-1536.jpg" media="(device-width: 768px) and (device-height: 1024px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1668-2224.jpg" media="(device-width: 834px) and (device-height: 1112px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2224-1668.jpg" media="(device-width: 834px) and (device-height: 1112px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1620-2160.jpg" media="(device-width: 810px) and (device-height: 1080px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2160-1620.jpg" media="(device-width: 810px) and (device-height: 1080px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1284-2778.jpg" media="(device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2778-1284.jpg" media="(device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1170-2532.jpg" media="(device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2532-1170.jpg" media="(device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1125-2436.jpg" media="(device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2436-1125.jpg" media="(device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1242-2688.jpg" media="(device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2688-1242.jpg" media="(device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-828-1792.jpg" media="(device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1792-828.jpg" media="(device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1242-2208.jpg" media="(device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-2208-1242.jpg" media="(device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-750-1334.jpg" media="(device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1334-750.jpg" media="(device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-640-1136.jpg" media="(device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)">
+    <link rel="apple-touch-startup-image" href="icons/apple-splash-1136-640.jpg" media="(device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)">  
 </head>
 <body>
     <div class="header">
-        <h1>Gyeonghwon デモページ</h1>
+        <h1><span class="euljiro">견훤(Gyeonghwon)</span> デモページ</h1>
         <span class="lead">Ver. <span id="version"></span></span>
     </div>
     <div class="map-container">