Add YOLO-NAS and ONNX support

config_infer_primary_yolox_legacy_onnx.txt

@@ -0,0 +1,26 @@
+[property]
+gpu-id=0
+net-scale-factor=0.0173520735727919486
+offsets=123.675;116.28;103.53
+model-color-format=0
+onnx-file=yolox_s.onnx
+model-engine-file=yolox_s.onnx_b1_gpu0_fp32.engine
+#int8-calib-file=calib.table
+labelfile-path=labels.txt
+batch-size=1
+network-mode=0
+num-detected-classes=80
+interval=0
+gie-unique-id=1
+process-mode=1
+network-type=0
+cluster-mode=2
+maintain-aspect-ratio=1
+symmetric-padding=0
+parse-bbox-func-name=NvDsInferParseYoloX_ONNX
+custom-lib-path=nvdsinfer_custom_impl_Yolo/libnvdsinfer_custom_impl_Yolo.so
+
+[class-attrs-all]
+nms-iou-threshold=0.45
+pre-cluster-threshold=0.25
+topk=300