Add ogp.png

Author: sago35

static/index.html

@@ -4,7 +4,22 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>koebiten wasm</title>
-    <script src="wasm_exec.js"></script> <!-- TinyGo のランタイム -->
+
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="https://sago35.github.io/koebiten/">
+    <meta property="og:title" content="koebiten wasm">
+    <meta property="og:description" content="Koebiten is a 2D game engine that runs on TinyGo. It’s inspired by Ebitengine and is characterized by its simple API.">
+    <meta property="og:image" content="https://sago35.github.io/koebiten/ogp.jpg">
+    <meta property="og:site_name" content="koebiten wasm">
+    <meta property="og:locale" content="ja_JP">
+
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:site" content="@sago35tk">
+    <meta name="twitter:title" content="koebiten wasm">
+    <meta name="twitter:description" content="Koebiten is a 2D game engine that runs on TinyGo. It’s inspired by Ebitengine and is characterized by its simple API.">
+    <meta name="twitter:image" content="https://sago35.github.io/koebiten/ogp.jpg">
+
+    <script src="wasm_exec.js"></script>
     <script type="module" src="main.js"></script>
     <style>
         body {