Add new CLI flag to auto connect the CLI to the IDE on startup

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

Right now when starting copilot CLI there is no way to automatically connect to your IDE without manually using the /ide command each time, this wastes time and can often be forgotten leading to a disjoined experience between your IDE and the CLI.

### Proposed solution

My proposal is to add a new flag to the coilot CLI that (if set) will automatically connect the copilot CLI to your IDE.

### Example prompts or workflows

`copilot --ide-connect `

This would auto connect copilot to your IDE, if you supply the workspace path then it would use that without further prompt, if not supplied and there are multiple IDE workspaces available then the normal prompt window would appear (as it does currently when using the /ide command).

### Additional context

```
--ide-connect Automatically connect CoPilot CLI to the IDE, if workspace path is supplied then the IDE for that workspace will be selected.
```