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>

tests/Entity/ChapterTest.php

@@ -13,7 +13,7 @@ class ChapterTest extends TestCase
         /** @var Book $book */
         $book = Book::query()->first();
 
-        $chapter = factory(Chapter::class)->make([
+        $chapter = Chapter::factory()->make([
             'name' => 'My First Chapter',
         ]);