Cert: Run on device

Add a sample device_config.json to allow cert testing on device.

1. Fill in Android device serial number in device_config.json.
2. Build device target for libbluetooth_gd, libgrpc++_unsecure,
stack_with_facade, and bluetooth_cert_stack. Push them to the device
under /system/lib64 and /system/bin correspondingly.
3. Set up Android tcp forward and reverse
   - For DUT:
     adb -s <DUT> forward tcp:8899 tcp:8899
     adb -s <DUT> forward tcp:8897 tcp:8897
     adb -s <DUT> reverse tcp:8895 tcp:8895 <- host is the server
   - For CERT:
     adb -s <DUT> forward tcp:8898 tcp:8898
     adb -s <DUT> forward tcp:8896 tcp:8896
     adb -s <DUT> reverse tcp:8894 tcp:8884 <- Host is the server
4. Run cert/run_device_cert.sh

Bug: 138260216
Test: cert/run_device_cert.sh
Change-Id: Ic2921a31910e370d86c4aa4143e92b5b15d8a1e8