add nova

nova/resources/lang/en/validation.php

@@ -0,0 +1,19 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Validation Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines contain the default error messages used by
+    | the validator class. Some of these rules have multiple versions such
+    | as the size rules. Feel free to tweak each of these messages here.
+    |
+    */
+
+    'attached' => 'This :attribute is already attached.',
+    'relatable' => 'This :attribute may not be associated with this resource.',
+
+];