feat(fe): open graph and manifest

[dayongkr]

Description

<meta name="theme-color" content="#3581FA"/>
<title>Codedang 코드당</title>
<meta name="description" content="Codedang, Online Judge for SKKU"/>
<link rel="manifest" href="/manifest.webmanifest"/>
<meta property="og:title" content="Codedang 코드당"/>
<meta property="og:description" content="Codedang, Online Judge for SKKU"/>
<meta property="og:image:type" content="image/png"/>
<meta property="og:image:width" content="1200"/>
<meta property="og:image:height" content="630"/>
<meta property="og:image" content="http://localhost:5525/opengraph-image.png?cb0a20e5f89e7261"/>
<meta name="twitter:card" content="summary_large_image"/>
<meta name="twitter:title" content="Codedang 코드당"/>
<meta name="twitter:description" content="Codedang, Online Judge for SKKU"/>
<meta name="twitter:image:type" content="image/png"/>
<meta name="twitter:image:width" content="1200"/>
<meta name="twitter:image:height" content="630"/>
<meta name="twitter:image" content="http://localhost:5525/opengraph-image.png?cb0a20e5f89e7261"/>
<link rel="icon" href="/favicon.ico" type="image/x-icon" sizes="16x16"/>
<link rel="icon" href="/icon.png?f7b253c1e67da8ee" type="image/png" sizes="32x32"/>
<link rel="apple-touch-icon" href="/apple-icon.png?26c316701e174975" type="image/png" sizes="180x180"/>

• Next.js의 File based 기능을 이용
  • apple touch icon, opengraph image, icon(32x32), manifest
  • 
  • app 폴더에 파일이 너무 많아지는 단점이 있음 -> public으로 다 몰아 넣고 root layout의 metadata 객체를 수정하는 방법도 있음

close #1094

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• Read the Contributing Guidelines and follow the Commit Convention
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Name	Status	Preview	Updated (UTC)
codedang	✅ Ready (Inspect)	Visit Preview	Dec 29, 2023 8:54am

[dotoleeoak]

좋습니다
저는 app 폴더에 파일 개수 늘어나는 건 신경 안 써도 괜찮을 거 같네요