Is your feature request related to a problem? Please describe.
I'd like to be able to provide a custom COLLATE in an orderByExpr

Describe the solution you'd like
Maybe

export type SerializedOrderByClause = {
  column: string
  direction?: `asc` | `desc` // omitted means 'asc'
  nulls?: `first` | `last`
  collate?: string
}

which would compile to something like

ORDER BY c COLLATE "de_DE";