RE: fix: Build issues caused by importing swift-rs

[XMLHexagram]

Previous #224

Summary by Sourcery

Update Swift dependency management to only build for macOS.

Build:

• Update Cargo.toml to remove swift-rs dependency and add it as a dependency for macOS targets.
• Update build.rs to conditionally link against swift-rs only when building for macOS.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request resolves build issues stemming from the "swift-rs" dependency by restricting its inclusion to macOS targets. It modifies the Cargo.toml file to remove the dependency from the general and build dependencies and adds it specifically to the macOS target dependencies. The build.rs file is updated to conditionally link the Swift library when building for macOS.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Removed swift-rs dependency for all targets except macOS	Removed swift-rs from the general dependencies section. Removed swift-rs from the build dependencies section. Added swift-rs to the dependencies section for the macOS target. Added swift-rs to the build dependencies section for the macOS target.	native/hub/Cargo.toml
Conditionally link Swift library on macOS	Added a conditional compilation block using #[cfg(target_os = "macos")] to ensure that the Swift library is only linked when building for macOS.	native/hub/build.rs

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[sourcery-ai]

Hey @XMLHexagram - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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