Deepstream support for Face detction

Hardware Platform (Jetson Xavier)

DeepStream Version5.1
• JetPack Version (valid for Jetson only)
**• TensorRT Version7.1
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

Duplicated with Deepstream support for Face detction