Ability to display table footer with totals

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Nova provides ability to display totals via Value Metrics, however, sometimes it is required to show totals for quite a few fields. In those cases a more compact UI is needed.

It would be great if we could have the ability to display table footer with totals. Basically what this package tried to achieve https://novapackages.com/packages/badinansoft/table-footer.

I'm not sure that we can add this kind of functionality via a package, without modifying Nova core components (such as /vendor/laravel/nova/resources/js/components/ResourceTable.vue). If the table extension is possible in a maintainable manner, please advice.