Have a quick way of splitting / unsplitting a vector2/vector3 input/output

[derkork]

Is your feature request related to a problem? Please describe.
It is very often required to individually set or get parts of a vector2/3. Right now this always requires the insertion of a "Construct VectorX" or "Split VectorX" node. This has a few drawbacks:

• It requires additional clicks to add and position the node.
• The node takes away precious screen space.
• The node clutters the graph and makes it harder to read.

Describe the solution you'd like
Unreal has some very nice solution to this which allows you to split any struct connector (called pins there) into separate connectors by right-clicking it.

The pins can also be recombined into a single pin (which will erase the connections to the individual connectors).

Describe alternatives you've considered
There are currently no alternatives.