Create new property by pressing plus icon in header row

[joepio]

We probably want to have a friendlier list of datatypes.

• Use better names
  • integer / float = number
  • atomicUrl = single relation
  • resourceArray = multi relation
  • string / markdown = text?
  • date / datetime = date
• Sub-forms with extra options.
  • Text: rich text (string vs markdown)
  • relation: allow multiple (atomicURL vs resourceArray)
  • number: allow comma (integer vs float), currency selector
  • multi-select: enum (atomicURL + tag + classtype). Here you need to create Tags with names and colors and an ordering. See notion UX

Other datatypes that are quite common, that require some strategy:

• Phone number (render tel: link)
• Email (render mailto: link)
• URL (render http href link, open new tab)

Might relate to https://github.com/atomicdata-dev/atomic-data-docs/issues/145