Option to multi -select -move -scale point in curve editor

[Arnklit]

Describe the project you are working on

A game in production

Describe the problem or limitation you are having in your project

Editing a complex curve is currently difficult because you can only move a single point at a time.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

The option to select multiple points and move them in one go and to rescale them with a rect extends around them.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

Adding keys would have to be changed to be a double click. since currently it's a single click and that would have to be a box select instead.

When the keys are selected, dragging one, moves them all and handles will appear around the rect of the selected keys to allow rescaling.

If this enhancement will not be used often, can it be worked around with a few lines of script?

This would be used often

Is there a reason why this should be core and not an add-on in the asset library?

This is about improving the curve editing out of the box.