Local Agent + Remote Shell

### Describe the feature or problem you'd like to solve

Run local agent but attach to remote shell

### Proposed solution

Some users might want copilot itself to run locally, however want it to run shell scripts & tools remotely (via ssh / sshfs) for dev environment.
- the dev environment may not have internet, so copilot users cannot login on it.
- the dev environment may be a shared dev space, so other (untrusted) users might access users' secrets (session data, auth credentials, etc.).

### Example prompts or workflows

_No response_

### Additional context

_No response_