[Feature request] Pass on return value of onSubmit inside handleSubmit

[zoodirector]

I would like to pass on the return value of options.onSubmit() inside form.handleSubmit() to be able to process returned values of the server response. For example the form could be valid but an error occurs when the form should be saved on the server. Or the form is stored successfully and I want to do something with the returned value.

Imagine the following use case: In an administration interface I have a view to create a new item with a form. To save I have two buttons: "Save and return to list view" and "Save and keep editing". Both buttons call form.handleSubmit() in their onClick handler. But depending on the result of the function they will continue in a different way.

I made the according commit here main...zoodirector:tanstack-form:handle-submit-results

and to illustrate the use case with an example: main...zoodirector:tanstack-form:handle-submit-results-example

Thanks for looking into it!
Kindly,
Nico