HeadsetControl 4.0.0

C++ Rewrite (#443)

* C++ Rewrite

Rewrite codebase from C to modern C++20

Complete modernization introducing type safety, better error handling, and a cleaner architecture.

- **Language**: C → C++20 (requires GCC 10+, Clang 10+, MSVC 2019+)
- **Structure**: Reorganized into lib/, cli/, tests/
- **Error handling**: Result<T> type with rich error information
- **Device code**: 50-70% reduction via protocol templates

- High-level C++ API (headsetcontrol.hpp)
- C API for FFI bindings (headsetcontrol_c.h)
- Shared library support (-DBUILD_SHARED_LIBRARY=ON)
- Protocol templates: HIDPPDevice, SteelSeriesNovaDevice
- Data-driven capability system
- Test suite

- HIDDevice base class with virtual methods per capability
- Device registry singleton for device lookup
- Capability descriptors as single source of truth
- Feature handler registry (replaces switch statements)

CLI interface unchanged - fully backwards compatible.

- See docs/ADDING_A_DEVICE.md for adding devices
- See docs/ADDING_A_CAPABILITY.md for adding features
- See docs/LIBRARY_USAGE.md for library integration

Ouput feature (JSON/YAML/ENV)

Update repo-device-requested.yml

Change formatting option and fixed format

Windows: Link statically

Auto-generate udev-rules

Also fix cmake version warning

Update README.md with the Development section

Also added Windows and `-c` option