PR-Codex overview

Focus of this PR:

This PR focuses on adding support for Octopus as a new API service option in the code.

Detailed summary:

• Added Octopus as a new API service option in the choose_api_service function.
• Updated the choice prompt to include the new option.
• Added new prompts to retrieve the Octopus key and set the Octopus API base.
• Added a new update_cli_config function to update the CLI config with the Octopus API base.
• Updated the init_octopus function to handle the Octopus service option and update the CLI config accordingly.

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