add wekan sso hint

docs/apps/wekan.md

@@ -21,6 +21,25 @@ im authentik:
 
 Login Button umbenennen: User -> Administration -> Layout -> Benutzerdefinierter Text der OIDC-Schaltfläche
 
+## SSO
+
+create scope wekan
+and attribute mapper with:
+
+```
+groupsDict = {"wekanGroups": []}
+for group in request.user.ak_groups.all():
+  my_attributes = group.attributes
+  my_attributes["displayName"] = group.name
+  my_attributes["isAdmin"] = group.attributes["isAdmin"] if 'isAdmin' in group.attributes else False
+  my_attributes["isActive"] = group.attributes["isActive"] if 'isActive' in group.attributes else True
+  my_attributes["forceCreate"] = group.attributes["forceCreate"] if 'forceCreate' in group.attributes else True
+  groupsDict["wekanGroups"].append(my_attributes)
+return groupsDict
+```
+
+see https://github.com/wekan/wekan/tree/master/packages/wekan-oidc
+
 
 ## Backup