Add missing Vector2d Socket type

This proprosal add missing Vector2d socket which contains two float values. in Geometry Node can be stored Vector2d attribute and shown in spreadsheet since long time. that socket color is lighter purple than Vector3d socket. use for process uv coordinated for many UV map nodes or 2d specific task, save memory space by 33%.

Outher usage of Vector2d Socket type

Complex Number

Complex numbers have applications in many scientific areas, including signal processing, control theory, electromagnetism, fluid dynamics, quantum mechanics, etc.

• Complex Number math node included, can eliminate use of many single math nodes to create workaround Complex Number math nodegroup.

Value with range or minimum and maximum Value

contain two float value in one socket