feat: add title icon configuration

themes/game/components/BlogPost.js

@@ -15,7 +15,7 @@ const BlogPost = ({ post }) => {
       <article key={post.id} className="mb-6 md:mb-8">
         <header className="flex flex-col justify-between md:flex-row md:items-baseline">
           <h2 className="text-lg md:text-xl font-medium mb-2 cursor-pointer text-black dark:text-gray-100">
-            <NotionIcon icon={post.pageIcon} />{post.title}
+            {siteConfig('POST_TITLE_ICON') && <NotionIcon icon={post.pageIcon} />}{post.title}
           </h2>
           <time className="flex-shrink-0 text-gray-600 dark:text-gray-400">
             {post?.publishDay}