Allow custom jupyter widget sources

[divyansshhh]

trafficstars

I would like to use a custom cdn as the source for some widgets. Currently only jsdelivr and unpkg are supported. Can we add support for custom widget sources?

[DonJayamanne]

@divyansshhh Out of curiosity, why do you need this? Why doln't the existing CDNs work?

[mlucool]

This is a security vulnerability/reliability issue for enterprises who want to minimize network calls to resources they do not control.

[vscodenpa]

Hey @DonJayamanne, this issue might need further attention.

@divyansshhh, you can help us out by closing this issue if the problem no longer exists, or adding more information.

[robertmartin8]

+1 this is necessary for corporate users