* Add base for ProxyCommand
* Fix crashes with ProxyCommand
* Add ProxyCommand to README
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Co-authored-by: Simon Gaufreteau <sgaufret@amazon.lu>
- Allow users to specify a RemoteCommand to execute on SSH connection, both via TUI and config file
- Add RequestTTY option (yes, no, force, auto) to host configuration and forms
- Update config parsing and writing to handle new fields
- Improve TUI forms to support editing and adding these options
- Fix edit form standalone mode to allow proper quit/save via keyboard shortcuts