SilentServicesY
Hi there!
Wurst does not have such a feature, and likely never will, since waypoints are generally considered a QoL feature and are usually allowed on servers. As such, there is no reason to maintain it within a hacked client.
There are many mods that introduce client-side waypoints, and they are widely available across different versions and modloaders.
I'd suggest using one of these:
https://modrinth.com/mod/xaeros-world-map
https://modrinth.com/mod/graph-waypoints