Github Issues as task tracker

### Problem / Use case

I want to use Github Issues as a way to store the tasks and to update it later. This could potentially allow CI/CD integration where a session can be assigned to an issue. 

### Proposed solution

```markdown
- Add `ralph-tui convert --options github
 - Use `gh` cli to manage the issues
```

### Alternatives considered

_No response_

### Additional context

_No response_