lib_llama_cpp_ios 0.5.2

iOS native build and Dart registration for lib_llama_cpp.

Unreleased

• Added Metal capability reporting for the bundled iOS framework.

0.4.0

• Linked native builds with llama.cpp common chat utilities and mtmd multimodal support.
• Prefer packaged prebuilt CPU-only iOS xcframeworks when present, with source-build fallback for monorepo development.

0.1.0

• Initial iOS federated plugin implementation.
• Added native library descriptor registration and iOS FFI plugin metadata.