Implement PHP CS Fixer and a coding standard to follow (#471)

* Create PHP CS Fixer config and add to CI workflow

* Run php cs fixer on project

* Add newline at end of file

* Update to use PHP CS Fixer v3

* Run v3 config on project

* Run seperate config in CI

app/Http/Requests/DeleteCustomersRequest.php

@@ -2,8 +2,8 @@
 
 namespace Crater\Http\Requests;
 
-use Illuminate\Validation\Rule;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class DeleteCustomersRequest extends FormRequest
 {
@@ -26,12 +26,12 @@ class DeleteCustomersRequest extends FormRequest
     {
         return [
             'ids' => [
-                'required'
+                'required',
             ],
             'ids.*' => [
                 'required',
-                Rule::exists('users', 'id')
-            ]
+                Rule::exists('users', 'id'),
+            ],
         ];
     }
 }