Add authorization option

[arshaviras]

Added authorize(bool | Closure) method to the plugin.

The new method allows to control who can access the "System Info" page.

Example usage with Spatie Laravel Permission or Filament Shield:

use Cmsmaxinc\FilamentSystemVersions\FilamentSystemVersionsPlugin;

FilamentSystemVersionsPlugin::make()
    ->authorize(fn () => auth()->user()?->hasRole('super_admin'));

This makes the page visible only for users who have the super_admin role.