Add `ViewHelper` to JupyterCAD Editor

[arjxn-py]

This issue proposes the addition of a ViewHelper to the JupyterCAD editor. This would greatly enhance user experience by providing a 3D viewport gizmo that allows users to interactively control and view camera orientations.

The ViewHelper can offer users a visual and interactive tool to change views, similar to the feature demonstrated in this repository: three-viewport-gizmo. A working example can be found here: three-viewport-gizmo example.

Expected Behavior

• A small interactive sphere-like gizmo should appear in the top or bottom-right corner of the JupyterCAD canvas.
• Users should be able to click on faces, edges, and corners of the gizmo to change the view orientation (top, bottom, left, right, front, back).
• The ViewHelper should remain fixed on the screen and should not be affected by camera movements such as panning, zooming, or rotating the 3D model in the main scene.
• It should provide smooth transitions between camera views, enhancing navigation in complex 3D scenes.

Proposed Implementation

• The three-viewport-gizmo library can be utilized to integrate the ViewHelper functionality within the JupyterCAD editor.
• The gizmo should be rendered separately from the main 3D scene to avoid interference with the model itself, and it should be responsive to user interactions (clicks and pointer movements).
• See the example on how this can be implemented: three-viewport-gizmo example.

[martinRenou]

Thanks! This extension looks really good.

💯 on adding it to JupyterCAD