Type hint site (#942)

* Type hint site

* Fix formatting

Co-authored-by: Jac <jacalata@users.noreply.github.com>

Author: jorwoods

tableauserverclient/server/request_factory.py

@@ -22,6 +22,7 @@
     from ..models import DataAlertItem
     from ..models import FlowItem
     from ..models import ConnectionItem
+    from ..models import SiteItem
     from ..models import ProjectItem