Add possibility to use nested dot notations for props

[girardinsamuel]

see here https://github.com/inertiajs/inertia-laravel/commit/f316b80d55f51e0bf6f69803ddfb5aa14a142d8b

This release adds the ability to nest props using dot notation (f316b80). This allows you to modify a globally shared prop from within a specific controller.