Peripherals: unified device graph + bindings (Unity Simulation FirmwareEngine)

[Kinin-Code-Offical]

Goal: A shared 'device graph' defines sensors/actuators and how Unity objects bind to simulation I/O and firmware endpoints.

Includes:

• Camera, IMU, GPIO, network, audio/microphone, meters/gauges.
• Input devices (mouse/controller) mapping into simulated USB/HID/serial paths.

Acceptance:

• A config/spec layer exists to describe bindings.
• Runtime can enable/disable device modules with near-zero overhead when unused.