Add Eloquent stub for phpstan

Author: firecow

extension.neon

@@ -4,3 +4,5 @@ includes:
 parameters:
     level: 8
     tmpDir: .phpstan
+    stubFiles:
+        - stubs/Eloquent.stub

stubs/Eloquent.stub

@@ -0,0 +1,3 @@
+<?php
+
+class Eloquent extends \Illuminate\Database\Eloquent\Model {}