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/LanguageTest.php

@@ -9,7 +9,7 @@ class LanguageTest extends TestCase
     /**
      * LanguageTest constructor.
      */
-    public function setUp(): void
+    protected function setUp(): void
     {
         parent::setUp();
         $this->langs = array_diff(scandir(resource_path('lang')), ['..', '.']);