It would handy to have a way to show an axis handle at the origin of the 3D Viewport.

- This should include any 3D Viewport, like the one in Blueprint.
- Add controls to resize it.
- Add controls to set it as an overlay.
- Sometimes the infinite red and green lines is kinda hard to see.
- Add a way to increase/decrease the visibility of this.
- Option to show a blue infinite z-axis line.