Feat/serialize deserialize (#508)

Co-authored-by: Taranjeet Singh <reachtotj@gmail.com>

embedchain/loaders/docs_site_loader.py

@@ -4,9 +4,11 @@ from urllib.parse import urljoin, urlparse
 import requests
 from bs4 import BeautifulSoup
 
+from embedchain.helper_classes.json_serializable import register_deserializable
 from embedchain.loaders.base_loader import BaseLoader
 
 
+@register_deserializable
 class DocsSiteLoader(BaseLoader):
     def __init__(self):
         self.visited_links = set()