feat(device): add Sony INZONE H5 (WH-G500)

Implements the Sony vendor HCI protocol over the 2.4 GHz USB dongle
(VID 054C, PID 0EBF). Supports:

- Battery (level + charging state) via BATTERY_INFO GET
- Chatmix via GAME_CHAT_MIX_BALANCE GET (device 0..90 mapped to 0..128)
- Sidetone via SIDETONE_VOLUME SET (0..128 mapped to device 0..50)
- Mic volume via MIC_VOLUME SET (0..128 mapped to device 0..50)

The control protocol lives on the Sony-vendor HID collection (usage
page 0xFF04, report ID 0x02). Each report wraps an HCI packet: host
issues COMMAND (opcode 0xFC00), device replies with EVENT (event code
0xFF). The exchange() helper builds the COMMAND, computes the
checksum, validates the response shell, matches event_id + TID, and
skips intervening NTFY_ACTIVE pushes from the dongle.

Author: splitbrain

README.md

@@ -51,6 +51,7 @@ A cross-platform tool to control USB gaming headsets on **Linux**, **macOS**, an
 | Audeze Maxwell 2 | All | x | x |   |   | x | x | x |   | x |   |   |   |   |   |   |   | x |
 | Lenovo Wireless VoIP Headset | All | x | x |   |   | x |   | x | x | x |   |   | x |   | x |   |   |   |
 | Sony INZONE Buds | All |   | x |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
+| Sony INZONE H5 | All | x | x |   |   |   | x |   |   |   |   |   |   | x |   |   |   |   |
 | HeadsetControl Test device | All | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
 
 **Platform:** All = Linux, macOS, Windows | L/M = Linux and macOS only

lib/device_registry.cpp

@@ -48,6 +48,7 @@
 
 // Sony devices
 #include "devices/sony_inzone_buds.hpp"
+#include "devices/sony_inzone_h5.hpp"
 
 // Test device
 #include "devices/headsetcontrol_test.hpp"
@@ -138,6 +139,7 @@ void DeviceRegistry::initialize()
 
         // Sony devices
         registerDevice(std::make_unique<SonyINZONEBuds>());
+        registerDevice(std::make_unique<SonyINZONEH5>());
 
         // Test device
         registerDevice(std::make_unique<HeadsetControlTest>());