Vector 2 operators

[Tegomlee]

Hello, I just started using Godot and saw an issue, A very minor issue but one that can be easily fixed (I think). I would like for Godot's vectors to support double operators in C# because _Process(double delta) uses a double and I have to type cast the delta every time, (float)delta. I would also like to be the one to add this feature, mainly because I want to learn how the engine works under the hood as well and add features to the engine in the future. Please let me know how I can add this feature. Godot is awesome and I love the fact that is open source, really feels cool to know that this is a passion project.