Improve UI nodes inputs and outputs arrange for more clear flowchart connections.

[vivi-gomez]

If we could change the order of the inputs and outputs that the nodes have, possibly the visualization of the connections between nodes would be clearer, preventing certain lines of connections from crossing over each other.

Perhaps through Node Properties we could move the order of the inputs/outputs of the nodes up or down.

Example:
Load Checkpoint Node
Default Outputs Order: (1)Model, (2)Clip, (3)VAE
New Rearrange Outputs to: Clip, Model, VAE