Done a round of phpstan fixes

app/Model.php

@@ -9,12 +9,9 @@ class Model extends EloquentModel
     /**
      * Provides public access to get the raw attribute value from the model.
      * Used in areas where no mutations are required but performance is critical.
-     *
-     * @param $key
-     *
      * @return mixed
      */
-    public function getRawAttribute($key)
+    public function getRawAttribute(string $key)
     {
         return parent::getAttributeFromArray($key);
     }