Geometry Nodes: new Rotate Points node

This node updates the "rotation" attribute on points.
Multiple ways to specify the rotation are supported.

Differential Revision: https://developer.blender.org/D9883

Ref T83668.

release/scripts/startup/nodeitems_builtins.py

@@ -514,6 +514,7 @@ geometry_node_categories = [
         NodeItem("GeometryNodePointDistribute"),
         NodeItem("GeometryNodePointInstance"),
         NodeItem("GeometryNodePointSeparate"),
+        NodeItem("GeometryNodeRotatePoints"),
     ]),
     GeometryNodeCategory("GEO_UTILITIES", "Utilities", items=[
         NodeItem("ShaderNodeMapRange"),