Pasted node should spawn at cursor's position in the graph

[elektrikbb]

As the title suggests.

[Keavon]

We'll have to design a way for this to work when multiple nodes are part of the same paste. And some effort should also probably be put towards collision minimization with other nodes.

[advait87]

One thing that can be done is that from the input_mapping itself, send down MouseState::position so that pasting at the mouse cursor can be implemented for all cases, not just nodes in the node graph. Should I implement that?

[Keavon]

@advait87 I'm not sure I completely follow but you're welcome to open a PR so I can see the code and/or implementation to understand better.

[kevlu93]

Hi opened PR #4285