up: add fromJson for quick create DataObject

Author: inhere

src/Obj/DataObject.php

@@ -35,6 +35,16 @@ public static function new(array $data = []): static
         return new static($data);
     }
 
+    /**
+     * @param string $json
+     *
+     * @return static
+     */
+    public static function fromJson(string $json): static
+    {
+        return new static(JsonHelper::decode($json, true));
+    }
+
     /**
      * @param array $data
      * @param bool  $override