Added Microsoft's open source graph layout engine

[hybridherbst]

Works much better for large graphs.

https://www.microsoft.com/en-us/research/project/microsoft-automatic-graph-layout/#code-samples

[Unity-Harry]

This would be a wonderful addition, I have some concerns about bundling in the .dll with this package though.
Can you confirm where you got the dll from? I'd like to make sure we're allowed to re-distribute it and confirm the hash :)
Also do you know if this would support all the editor platforms? (Win, Mac, Linux)

[hybridherbst]

The DLL comes from Nuget and the code is on GitHub under MIT license. You're right, I forgot to add the license file. Also, it's .NET Standard 2.0 so should work everywhere.

In an ideal world PackMan would already support NuGet out of the box and we could just reference it :)

One idea would be to push the package ecosystem even further, and ask @xoofx for integration in his Unity NuGet registry, I'd like that a lot!

I opened a PR, maybe you can ping Alexandre directly :)
bdovaz/UnityNuGet#15