code tunnel to local machine directly

[zyzhang1992]

We use code tunnel on a HPC cluster. Our cluster uses 2 factor authorization and doesn't allow tunnel connection to azure machines, as currently implemented for code tunnel.

We request a new feature that allows tunnel and authenticate to the local vscode client from the code tunnel running on a compute node on a remote cluster. The tunnel connects the local machine to the compute node on the remote cluster via the log in nodes on the remote cluster.

This will open up the possibility of running code tunnel/vscode server in any desirable environment on a HPC cluster. This will enable development work in HPC environments that are not possible otherwise.