Peritext blocks UI

[streamich]

• [ ] Spacing between blocks
• [ ] Headings
  • [ ] H1, H2, H3, H4, H5, H6
  • [ ] Title
  • [ ] Subtitle
  • [ ] Make them not bold
• [ ] Code block
• [ ] Code block with language
  • [ ] Language picker
  • [ ] Syntax highlight tokens
• [ ] Nestable block elements
  • [ ] Blockquote
  • [ ] Enforce
• [ ] Block menu move into viewport
• [ ] Paragraph block element properties
  • [ ] Text alignment
    • [ ] Left
    • [ ] Right
    • [ ] Center
    • [ ] Stretch
  • [ ] Indentation
    • [ ] Move left
    • [ ] Move right
  • [ ] Line height