refactor(Playwright Engine): Separate what we can for cleaner code and the async function later

The caching will give a slight performance increase with bulk requests

scrapling/engines/toolbelt/__init__.py

@@ -1,5 +1,6 @@
 from .custom import (BaseFetcher, Response, StatusText, check_if_engine_usable,
-                     check_type_validity, do_nothing, get_variable_name)
+                     check_type_validity, do_nothing, do_nothing_async,
+                     get_variable_name)
 from .fingerprints import (generate_convincing_referer, generate_headers,
                            get_os_name)
 from .navigation import (construct_cdp_url, construct_proxy_dict,

scrapling/engines/toolbelt/custom.py

@@ -302,3 +302,8 @@ def check_type_validity(variable: Any, valid_types: Union[List[Type], None], def
 def do_nothing(page):
     # Just works as a filler for `page_action` argument in browser engines
     return page
+
+
+async def do_nothing_async(page):
+    # Just works as a filler for `page_action` argument in browser engines
+    return page