Add note about laravel/ui and Laraven Nova

[bilfeldt]

Adding a note to the API section about First-Party UI Initiated Requests for applications using laravel/ui for authentication instead of Sanctum. This includes a code example for policies to be compatible with Laravel Nova.

[taylorotwell]

Set your nova.guard configuration option to sanctum in your config/nova.php configuration file.

[bilfeldt]

@taylorotwell awesome 👍 I did not even find this option until I searched the sanctum source code upon seeing your comment.

Of cause it also works simply changing the default guard in config/auth.php

/*
|--------------------------------------------------------------------------
| Authentication Defaults
|--------------------------------------------------------------------------
|
| This option controls the default authentication "guard" and password
| reset options for your application. You may change these defaults
| as required, but they're a perfect start for most applications.
|
*/

'defaults' => [
    'guard' => 'sanctum', // originally 'web'
    'passwords' => 'users',
],

Might I ask @taylorotwell if we should not either

1. default new Laravel installations with Jetstream to use sanctum as default guard
2. or document this guard in either sanctum or Jetstream?