How do i install a unsupported extension?

[ghost]

Hello,
I was wondering how would i install a custom extension?
Trying to add github copilot to this.

• prajwal

[ghost]

[INFO] [auth] [2021-12-11T20:40:39.634Z] Invalid copilot token: missing token: 404 
[ERROR] [default] [2021-12-11T20:40:39.638Z] GitHub Copilot could not connect to server. Extension activation failed: "User not authorized"

[jsjoeio]

Hmm...Can you post repro steps? I'm not sure how Copilot handles authentication/tokens