Control-Z needs to suspend (like any *nix command line tool) #372
Description
Describe the feature or problem you'd like to solve
Right now copiliot cli is trapping and ignoring control-z.
Proposed solution
Control-z should have its normal behavior by default, or at least via an option. If it was being used for undo, then offer control-underscore as the key mapping for undo.
Example prompts or workflows
No response
Additional context
No response