`aws ec2-instance-connect ssh` but in the background

### Describe the feature

`aws ec2-instance-connect ssh` but in the background

### Use Case

In my CI/CD machine, I would like to create an SSH session to EC2 using `aws ec2-instance-connect ssh` in the background. Then create a docker context to use the SSH session. Then run a docker command. And then terminate the session.

### Proposed Solution

_No response_

### Other Information

_No response_

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### CLI version used

2.17.59

### Environment details (OS name and version, etc.)

Ubuntu 22.04