Direct ADB car telemetry helper

CarTelemetryProbe is a small, read-only DEX program run by Android's app_process through ADB. It is pushed to /data/local/tmp and is never installed as an Android application. It binds directly to the factory SAIC vehicle service and performs only the known getter transactions for SOC, range, speed, voltage, consumption, and charging status.

The checked-in server/assets/car-telemetry-probe.dex is built from this source for Android API 28. It has no MG Utility dependency and sends no vehicle-control calls.