feat: add metadata property to RequestContext

[fernando-torres-blip-ai]

Description

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Fixes #301 🦕

[gemini-code-assist]

Summary of Changes

Hello @fernando-torres-blip-ai, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the RequestContext class by introducing a new metadata property. This addition allows consumers of the context object to easily retrieve and utilize request-specific metadata, improving the flexibility and information richness of the RequestContext for various agent execution scenarios.

Highlights

• New Feature: Metadata Property: I've added a new metadata property to the RequestContext class. This property provides a convenient way to access any associated metadata from the underlying request parameters, returning an empty dictionary if no parameters or metadata are present.

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[gemini-code-assist]

Code Review

This pull request introduces a metadata property to the RequestContext class. I've identified two areas for improvement: enhancing the type hint for better code clarity and adding unit tests to ensure the new functionality is reliable and maintainable.