chore: improve README.md

[hi-ogawa]

• demo movie
• libraries and tools
• infrastructure

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• web app framework
  • https://remix.run/
• ui
  • https://github.com/hi-ogawa/unocss-preset-antd
  • floating-ui
  • headless-ui
  • https://remixicon.com/
• infrastructure
  • database https://planetscale.com
  • serverless/cdn vercel
  • recaptcha
• dev
  • unit test: vitest
  • e2e test: playwright