- Added functions to generate SSH user data in cloud-config format and encode it in Base64 for server creation.
- Updated the `create_gpu_server` function to include public key handling for SSH access.
- Adjusted the default boot volume size from 40GB to 30GB in `os_client.py`.
- Enhanced the `cmd_up` function to manage SSH key injection and server state more effectively.
- Improved logging for SSH connection attempts and error handling in `wait_ssh` to provide clearer feedback on authentication issues.
