[Feature]: Add node rotation to avoid cluttering

[red010]

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

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[abrenneke]

Interesting idea, thanks! It might be pretty difficult because I make a lot of assumptions that inputs are on the left and outputs are on the right, but I'll noodle with the idea