🛂 (client) : Client-side auth handling

[tkhwang]

Description

• 기존 <DemoPage /> 는 /about 로 링크함.
• 향후 작업을 위한 기본 nav bar 와 auth handling 정리함.
• jwt token handling
  • localStorage 이용.
  • reactive variable 사용하지 않도록 변경함.

Type of change

• [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] ✨ New feature (non-breaking change which adds new functionality)
• [ ] 🐛 Bug fix (non-breaking change which fixes an issue)
• [X] ♻️ Refactor (non-breaking change which refactors code)
• [ ] 🩹 Chore (non-breaking change which changes the small things)
• [ ] 📝 This change requires a documentation update

Further to-do lists

• Client auth request with jwt token in header.

[vercel[bot]]

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🔍 Inspect: https://vercel.com/tkhwang/readable/8aZDLfAsnViYBxbk5ZmwNk8ShsRh
✅ Preview: https://readable-git-feat-client-0717-setup-tkhwang.vercel.app

[zlrlo]

우왕 로그인된당~~