This commit improves the reliability of the `configure_vscode.py` script
on macOS by improving the detection mechanism for the Visual Studio Code
CLI command (`code`). It introduces a fallback mechanism to locate the
`code` executable in common installation path for macOS, addressing the
issue where the VSCode CLI might not be found in PATH variable.
Additionally, the commit refines error handling by providing clearer error
messages for unknown exceptions during the extension installation process.
This ensures that users are better informed about the nature of the error,
facilitating easier troubleshooting.
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