Laravel 8 shift squash & merge (#3029)

* Temporarily moved back config path
* Apply Laravel coding style
* Shift exception handler
* Shift HTTP kernel and middleware
* Shift service providers
* Convert options array to fluent methods
* Shift to class based routes
* Shift console routes
* Ignore temporary framework files
* Shift to class based factories
* Namespace seeders
* Shift PSR-4 autoloading
* Shift config files
* Default config files
* Shift Laravel dependencies
* Shift return type of base TestCase methods
* Shift cleanup
* Applied stylci style changes
* Reverted config files location
* Applied manual changes to Laravel 8 shift

Co-authored-by: Shift <shift@laravelshift.com>

database/factories/Entities/Models/PageFactory.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Database\Factories\Entities\Models;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Str;
+
+class PageFactory extends Factory
+{
+    /**
+     * The name of the factory's corresponding model.
+     *
+     * @var string
+     */
+    protected $model = \BookStack\Entities\Models\Page::class;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array
+     */
+    public function definition()
+    {
+        $html = '<p>' . implode('</p>', $this->faker->paragraphs(5)) . '</p>';
+
+        return [
+            'name'           => $this->faker->sentence,
+            'slug'           => Str::random(10),
+            'html'           => $html,
+            'text'           => strip_tags($html),
+            'revision_count' => 1,
+        ];
+    }
+}