Xranklin Migration

[tlienart]

• [x] toy (internal)
• [ ] basic bootstrap 5 stuff (no markdown)
• [ ] basic
• [ ] jemdoc
• [ ] just-the-docs
• [ ] hyde
• [ ] hypertext
• [ ] lanyon
• [ ] minimal-mistakes
• [ ] pure-sm
• [ ] tufte
• [ ] vela
• [ ] celeste