feat: elements class add htmlOuters function

Author: jae-jae

src/Dom/Elements.php

@@ -218,6 +218,19 @@ public function htmls()
         });
     }
 
+    /**
+     * Gets the htmlOuter of all the elements
+     *
+     * @return \Illuminate\Support\Collection|\Tightenco\Collect\Support\Collection
+     */
+    public function htmlOuters()
+    {
+        return $this->map(function($item){
+            return trim($item->htmlOuter());
+        });
+    }
+
+
     /**
      * @return phpQueryObject
      */