2D vector operations are just as important as the 3D ones and having individual commands for them is very useful for faster vector operations.
Command syntax:
```
vector1 vectorDiff2D/vectorAdd2D vector2
vector1: 2D or 3D vector (Z component is ignored)
vector2: 2D or 3D vector (Z component is ignored)
return: 3D vector with Z=0
```