Resize/rotate a rectangular cube based on mouse cursor position?

I'm sorry if this has been asked before, I'm new here. I searched a lot but couldn't find what I needed.

Basically, I want to create a gameObject (a cube) when the player clicks the mouse, and set a pivoting point at the initial click position. While pressing the mouse, I want to be able to make the other side of the cube 'follow' the mouse and be placed when the click is released; to form a rectangular shape.

If you have the time, please take a look at this game, which I want to replicate. In the game which I linked, the platform which is being created is invisible. I would like it to be visible when you are dragging it.

Thanks in advance!