Offer pipeline builders for Field Attributes

[MangelMaxime]

Currently, attributes are exposed using records only meaning that we need to provides all the properties all the time.

Attributes = {
	Label = "Order Value"
	Placeholder = "Order Value"
	HtmlAttributes = []
}

This is annoying because we need to provide information that we don't care about.

For example, if you have a DatePickerField you could have attributes looking like that:

type Attributes = {
	Label: string
	DisplayMode: DisplayMode
	ShouldDisableDate: System.DateTime -> bool
	ShouldDisableMonth: System.DateTime -> bool
	ShouldDisableYear: System.DateTime -> bool
}

Forcing the user to provide all the ShouldDisableXX functions, even when he don't want to disable any.

Exposing an alternative API would allow us to work around this problem:

1. We could use classes to have optional arguments but discovery is not that great in IDE IHMO
2. We could use pipeline builders, making discovering API easier

Form.datePickerField {
    Parser =
        fun value ->
            match value.SelectedDate with
            | Some date -> Ok date
            | None -> Error "This field is required"
    Value = _.CollectionDate
    Update =
        fun newValue values -> {
            values with
                CollectionDate = newValue
                // Reset the time slot when the date changes
                CollectionTimeSlot = ""
        }
    Error = fun _ -> None
    Attributes =
        DatePickerField.Attributes.create "Collection Date"
        |> DatePickerField.Attributes.withDisplayMode DatePickerField.DisplayMode.Default
        |> DatePickerField.Attributes.withShouldDisableDate (fun date ->
            timeSlots
            |> List.exists (fun slot -> Date.getDayKey slot.Start = Date.getDayKey date)
            |> not
        )
}

3. Another solution is to use fluent API like I did in the past for Thoth.Elmish.FormBuilder old comparaison of the different style

Today, I think I lean more toward pipeline builders.