TIM-VX/samples/multi_device

## brief
The multi_device demo uses some acuity exported tim-vx networks, and running on 4 devices of NPU using platform api.

## environment
  export VSIMULATOR_CONFIG=VIP9400O_PID0XD9
  export VIV_MGPU_AFFINITY="1:0"
  export VIV_OVX_USE_MULTI_DEVICE="1:1"
  export TIM_VX_ROOT="${workspaceFolder}/tim-vx"

## build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Debug -DTIM_VX_BUILD_EXAMPLES=ON -DTIM_VX_ENABLE_PLATFORM=ON

## run
cd build
./samples/multi_device/multi_device