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

database/factories/AddressFactory.php

@@ -33,7 +33,7 @@ class AddressFactory extends Factory
             'phone' => $this->faker->phoneNumber,
             'fax' => $this->faker->phoneNumber,
             'type' => $this->faker->randomElement([Address::BILLING_TYPE, Address::SHIPPING_TYPE]),
-            'user_id' => User::factory()
+            'user_id' => User::factory(),
         ];
     }
 }