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/Models/CompanySetting.php

@@ -1,7 +1,7 @@
 <?php
+
 namespace Crater\Models;
 
-use Crater\Models\Company;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
@@ -32,7 +32,7 @@ class CompanySetting extends Model
                 [
                     'option' => $key,
                     'company_id' => $company_id,
-                    'value' => $value
+                    'value' => $value,
                 ]
             );
         }