Transform2D set_origin binding

[theia-ajax]

There's no gdscript binding to set_origin on Transform2D... I'd like there to be one.

[aaronfranke]

What prevents you from using .origin =?

In general we don't want to have many methods that mutate the struct, it can lead to unexpected bugs. The set_rotation, set_scale, and set_skew methods are exceptions to this, but note that they are not present in 3D. I don't want to propose we remove those methods, but I would be skeptical of adding more methods like them.

[theia-ajax]

I think I tried .origin at one point and had an issue but realized I had probably called it on a node itself and not the transform of the node. I found a work-around for my specific issue at the time but just took another pass trying to use transform.origin and it worked as expected so no binding necessary.

Ultimately the issue was ignorance :D