Add Psalm to check for possibly fatal issues (#973)

app/Http/Controllers/Api/ApiNoteController.php

@@ -3,10 +3,10 @@
 namespace App\Http\Controllers\Api;
 
 use App\Note;
-use Validator;
 use App\Contact;
 use Illuminate\Http\Request;
 use Illuminate\Database\QueryException;
+use Illuminate\Support\Facades\Validator;
 use App\Http\Resources\Note\Note as NoteResource;
 use Illuminate\Database\Eloquent\ModelNotFoundException;