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/BookShelfTest.php

@@ -37,7 +37,7 @@ class BookShelfTest extends TestCase
 
     public function test_shelves_shows_in_header_if_have_any_shelve_view_permission()
     {
-        $user = factory(User::class)->create();
+        $user = User::factory()->create();
         $this->giveUserPermissions($user, ['image-create-all']);
         $shelf = Bookshelf::first();
         $userRole = $user->roles()->first();