feat: 2021 官网产品大图升级

[visiky]

• [x] 首页产品大图
• [x] 头部导航

待办:

• [x] 新增的栈，信息收集完善
• [x] 产品大图颜色优化

[github-actions[bot]]

🎊 PR Preview 90e5ac926737cdadefcc81cf8b663e3ed9a0e644 has been successfully built and deployed to https://antvis-antvis-github-io-preview-pr-122.surge.sh

:clock1: Build time: 539.45s

_{🤖 By surge-preview}