deps(website): upgrade vuepress 1.x to 2.x

[nitrocode]

what

• Upgrade vuepress to 2.x
• Use docsearchPlugin plugin for algolia
• add internalizationation (i18n)
• Allow renaming some files to Overview as we do in our current docs (unsure if this is possible)
• Fix home page to allow scrolling down to see benefits
• Convert stylus to scss for Home.vue

Should we

• set contributors to false ?
  • sometimes it shows duplicate names
• set lastUpdated to false ?
  • it shows some pages haven't been updated in years which doesn't look the best

why

• Latest and greatest
• v1 is no longer supported
• Resolve all security issues in website
• Dark mode is supported

tests

• I have tested my changes by running yarn install && yarn website:dev locally

✗ yarn audit
yarn audit v1.22.19
0 vulnerabilities found - Packages audited: 240
✨  Done in 0.69s.

yarn run vuepress dev runatlantis.io --debug

references

• https://deploy-preview-2980--runatlantis.netlify.app/
• vuepress v1 to v2 migration
  • v2 repo https://github.com/vuepress/vuepress-next
  • migration docs https://v2.vuepress.vuejs.org/guide/migration.html
  • algolia https://v2.vuepress.vuejs.org/reference/plugin/docsearch.html#usage
  • i18n https://v2.vuepress.vuejs.org/guide/i18n.html#site-i18n-config
  • defaultTheme https://v2.vuepress.vuejs.org/reference/default-theme/config.html
  • Convert Home.vue
    • https://v2.vuepress.vuejs.org/reference/default-theme/extending.html#components-replacement
  • These are not for Home.vue conversion
    • https://v2.vuepress.vuejs.org/advanced/theme.html#create-a-theme
    • https://v2.vuepress.vuejs.org/advanced/cookbook/usage-of-client-config.html#register-vue-components
  • issues
    • Announcement about VuePress v2 and v1 vuejs/vuepress#2744
    • [Bug report] Overwriting default theme components does not work anymore vuepress/core#104
• convert stylus to scss
  • https://sass-lang.com/guide
• previous pr chore(deps): website: upgrade vuepress 0.x to 1.x #2828
• tested and commented out a way to i18n the website
  • docs: support different languages (i18n) #2951
  • removed an init Spanish section by request from @jamengual

[chenrui333]

Thanks!! Looks great after turning the lights on. :D