Implement `web_search` Action

[dproworld]

Summary The implementation of ddgs (Duck Duck go Search) as a function call for web searches has been used by Devika (an open-source version of devin) and provides the agent with sufficiently viable information such as most-popular documentation with a minimal implementation. This feature needs some validation, but has already been implemented, so it won't be from scratch.

Technical Design Already implemented in Devika

Alternatives to Consider Like Devika, if this were to be added, google and bing search keys could be used for better results (for certain searches).

Additional context DDGS is free (at least Devika's implementation).

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[github-actions[bot]]

This issue was closed because it has been stalled for over 30 days with no activity.