Support deep sets in `interface.form.out_key`

[MikeCarbone]

Reverse of the deep parse notation, we want to be able to deeply set update objects

const config = {
    keys: {
        companyName: {
            schema: {
                type: "string"
                default_value: "Interweave"
            },
            interface: {
                form: {
                    out_key: "company.name"
                }
            }
        }
    }
}

{
  "company": {
    "name": "Interweave"
  }
}