Add NGL Molecule Viewer

[Marc Skov Madsen]

PyHDX has an existing NGL Molecule Viewer which is ok to copy or get inspiration from.

https://github.com/Jhsmit/PyHDX/blob/master/dev/bokeh_extension.py

https://twitter.com/Jhsmit_/status/1398233190519693317

[Marc Skov Madsen]

I also have a one way communicating ngl viewer here https://github.com/MarcSkovMadsen/awesome-panel-extensions/blob/master/awesome_panel_extensions/widgets/ngl_viewer.py

[Jochem Smit]

The code you reference is a standalone working example but the code in this folder is more our testing/playground folder.
The current implementation in PyHDX is found here:
typescript: https://github.com/Jhsmit/PyHDX/blob/master/pyhdx/panel/ngl_viewer.ts
widget: https://github.com/Jhsmit/PyHDX/blob/12fc2b5f67200885706226823bd8e1f46e3b5db1/pyhdx/panel/widgets.py#L130

The two-way NGL viewer as bokeh extension was done by @sebaztiano

[Marc Skov Madsen]

With inspiration from the PR provided by @Jhsmit I started working on this here https://github.com/MarcSkovMadsen/panel-chemistry/tree/ngl_viewer