[Feature]: Add node rotation to avoid cluttering

### Feature Request

Add the possibility to rotate nodes 90, 180 and 270 degrees on canvas to avoid canvas cluttering.
See Mathworks Simulink as an example

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

Start by locating the canvas entry point and the code that renders and positions nodes. Trace how node state is stored and how canvas interactions update it. Done means nodes can be rotated by 90, 180, and 270 degrees and the rotations reduce clutter without breaking existing canvas behavior.

Written by the indexing model from the issue text.