Fix Issue #3325

[Mr-Imperium]

Added a configuration options md file to openhands/docs. Added appropriately to sidebars.ts. Fixes #3325

End-user friendly description of the problem this fixes or functionality that this introduces

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Resolves #3325

[enyst]

Thank you for working on this, @Mr-Imperium ! This issue might be tricky, because of just how many configuration options there are.

• I would mostly suggest to take a look at config.toml.template file, here, we have usually tried to keep it up to date, as an example that users can modify as they need
• I'm afraid the LLM you used hallucinated some default values 😅. For example, AWS defaults are all None, there's no 'us-west' anywhere. The LLM specific options, including AWS options, are here, the same for others, like prompt caching is by default True.
• for the record, the config module where all *config.py files are, is the implementation of all these options