[v6] Reuse code on withoutRole and withoutPermission

[erikn69]

on #2463, withoutRole and withoutPermission were added, but I think that duplicating the same code should be avoided.
Also I didn't understand what $debug = false is for

laravel-permission/src/Traits/HasPermissions.php

Line 129 in 8f15d18

public function scopeWithoutPermission(Builder $query, $permissions, $debug = false): Builder

Laravel do the same

• Illuminate/Database/Eloquent/Builder.php#orWhere,
• Illuminate/Database/Eloquent/Builder.php#where

[drbyte]

Great! Thanks.