[Feature] Integrate code-graph Functionality into CodeBRT

[dugengmaster]

Is your feature request related to a problem? Please describe.

Integrating the code-graph functionality into CodeBRT would enhance code visualization and reference tracking capabilities.

Describe the solution you'd like

Incorporate the code-graph feature into CodeBRT to enable users to display code structures and locate all references within the codebase.

Describe alternatives you've considered

Exploring other code visualization tools; however, code-graph offers a more seamless integration with CodeBRT.

Additional context

Code-graph is an egui application that supports multiple programming languages, including Java, JavaScript, Rust, and C.
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