[Feature Request] Add support for self-issued certificate login

[WackyGem]

I'm using traefik as the ingress on the k8s and using a self issued CA certificate. I am able to access dolphindb-webserver via HTTPS normally. however, when using vscode-extension I encounter error: self-signed certificate. I would like vscode-extension to support this case, just like wscat supports it with -n. Maybe vscode-extension also needs to support trustServerCertificate: true in dolphindb.connections.