[Feature Request] Reroute Portal

This could help a lot with the spaghetti nodes.

The idea is simply to allow the reroute node to have a variable name.
Two Reroute nodes with the same variable name is treated as if they are the same node.

Now, you imagine you have as many reroute portals with the same var name. One should be for the input, and as many as you like for the output, even the one having the input.
But if you use two for the input, you should get an error.