refactor(minicpm_o): reformat code and remove unused includes

[oreomaker]

Reformat the main example file for better readability and remove unused header includes. Also reformat the configuration file to improve code structure and maintainability.

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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