Incrementing default for new sortable entries + making new entries sortable before saving

[raayu83]

As always, great work you are doing on django-unfold! Nothing that comes close to it for building Admin Interfaces!

I've a suggestion for fine-tuning the sortable inlines:

Do you have any examples?

Right now, the default ordering value is static for https://unfoldadmin.com/docs/inlines/sortable/.

Is it a third party application feature request?

No

Describe your feature request
Would it be possible to add an option to make each new added entry have the value of max(previous_entries_orders) + 1 ? E.g. if the current max is 99, make the new entry 100. if you add another entry before saving, make it 101.

In this context, it would also be great if new entries could be ordered in the UI before saving.

[lukasvinclav]

There is an event in Django JS when the inline row is added/deleted so probably we can use it to change the value. I will take a look at this.