Add ability to add grouped options in a select field.

[Texlo-Dev]

Is your feature request related to a problem? Please describe.
Would like to have grouped categories in a select field but I cannot do so, so I guess it's a problem.

Describe the solution you'd like
Allow an option, such as which houses items.
Describe alternatives you've considered

Additional context
Add any other context or screenshots about the feature request here.

An example.

[luisDanielRoviraContreras]

It's a good idea to see if it can be added for a next update, thank you very much for the contribution

[luisDanielRoviraContreras]

The group item functionality has been added in the latest version, thank you very much for the contribution and the wait

https://lusaxweb.github.io/vuesax/components/selects.html#is-selected-item