[PHPCS] Extend to check/fix all source code and turn GHA into auto-commit fixer (#1003)

* phpcs: enable also for config, resources and tests

* composer fix-style

* vendor/bin/phpunit -d --update-snapshots

* gha: instead of checking the style, fix and auto-commit it 💪

tests/Console/ModelsCommand/LaravelCustomCasts/Test.php

@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\LaravelCustomCasts;
 
@@ -39,7 +41,7 @@ class Test extends AbstractModelsCommand
         $mockFilesystem = Mockery::mock(Filesystem::class);
         $mockFilesystem
             ->shouldReceive('get')
-            ->andReturn(file_get_contents(__DIR__.'/Models/CustomCast.php'))
+            ->andReturn(file_get_contents(__DIR__ . '/Models/CustomCast.php'))
             ->once();
         $mockFilesystem
             ->shouldReceive('put')