add cvt model densenet resnest wide-resnet

.jenkins/check/config/filter_pylint.txt

.jenkins/check/config/whitelizard.txt

research/cvtmodel/README_CN.md

research/cvtmodel/densenet/README_CN.md

research/cvtmodel/densenet/ascend310_infer/CMakeLists.txt

research/cvtmodel/densenet/ascend310_infer/build.sh

research/cvtmodel/densenet/ascend310_infer/inc/utils.h

research/cvtmodel/densenet/ascend310_infer/src/main.cc

research/cvtmodel/densenet/ascend310_infer/src/utils.cc

research/cvtmodel/densenet/export.py

research/cvtmodel/densenet/postprocess.py

research/cvtmodel/densenet/scripts/run_infer_310.sh

research/cvtmodel/densenet/src/densenet121.py

research/cvtmodel/densenet/src/densenet161.py

research/cvtmodel/densenet/src/densenet169.py

research/cvtmodel/densenet/src/densenet201.py

research/cvtmodel/resnest/README_CN.md

research/cvtmodel/resnest/ascend310_infer/CMakeLists.txt

research/cvtmodel/resnest/ascend310_infer/build.sh

research/cvtmodel/resnest/ascend310_infer/inc/utils.h