Move bd-bonjson's ffi functionality into a separate crate

[kstenerud]

To get around duplicate symbol linker errors in #255

[Copilot]

Pull Request Overview

This PR extracts FFI (Foreign Function Interface) functionality from the bd-bonjson crate into a separate bd-bonjson-ffi crate to resolve duplicate symbol linker errors.

• Moves all FFI-related code from bd-bonjson to a new bd-bonjson-ffi crate
• Updates the Writer API to use a constructor pattern instead of direct struct initialization
• Adjusts test files and build configurations to reference the new crate structure

Reviewed Changes

Copilot reviewed 11 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
bd-bonjson/src/lib.rs	Removes ffi module export
bd-bonjson/src/writer.rs	Adds public constructor method for Writer
bd-bonjson/src/writer_test.rs	Updates test to use new Writer constructor
bd-bonjson-ffi/src/lib.rs	New FFI crate with WriterBufWriterFile wrapper and C bindings
bd-bonjson-ffi/include/bd-bonjson/ffi.h	C header file for FFI functions
bd-bonjson-ffi/Cargo.toml	New crate configuration
bd-bonjson-ffi/build.rs	Build script for generating C bindings
bd-bonjson-tests/src/ffi_tests.rs	Updates import to use new FFI crate
bd-bonjson-tests/Cargo.toml	Adds dependency on new FFI crate
bd-bonjson-tests/build.rs	Updates build dependency path
Cargo.toml	Adds new crate to workspace

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[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 13 changed files in this pull request and generated 2 comments.

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_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 13 changed files in this pull request and generated 2 comments.

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_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 13 changed files in this pull request and generated 1 comment.

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