Ordering capabilities for collections

It would be great to be able to order collections.

The way this could work is: When I add a orderField to my collection, the collection index page shows not only the slugField but also the orderField and allows to drag and drop the order which then updates the data of all relevant content/data files.

Something like this…

export const keystaticHomepageFactsConfig = collection({
  label: 'Homepage Fakten-Boxen',
  path: 'src/content/homepageFacts/*',
  slugField: 'fact',
+  orderField: 'position',
  schema: {
    position: fields.number({ label: 'Reihenfolge', validation: { isRequired: true } }),
    fact: fields.slug({ name: { label: 'Fakt' } }),
    factSubline: fields.text({ label: 'Untertitel', validation: { isRequired: true } }),
    description: fields.text({
      label: 'Untertitel',
      multiline: true,
      validation: { isRequired: true },
    }),
  },
})

Start by tracing the collection configuration and collection index page, since the issue names no files or tests. Confirm how collection data files are written, then consider the work complete when an orderField is shown alongside the slugField, supports drag-and-drop ordering, and persists the new order to all relevant content/data files.