add rknn conversion - install and use scripts, auto convert to rknn after AI training is done and put pt and rknn models to /azaion/models directory

orangepi5/convert-install.sh

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+mkdir rknn-convert
+cd rknn-convert
+
+# Install converter PT to ONNX
+git clone https://github.com/airockchip/ultralytics_yolov8
+cd ultralytics_yolov8
+sudo apt install python3.12-venv
+python3 -m venv env
+source env/bin/activate
+pip install .
+pip install onnx
+cp ultralytics/cfg/default.yaml ultralytics/cfg/default_backup.yaml
+sed -i -E "s/(model: ).+( #.+)/\1azaion.pt\2/" ultralytics/cfg/default.yaml
+cd ..
+deactivate
+
+# Install converter ONNX to RKNN
+wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
+chmod +x miniconda.sh
+bash miniconda.sh -b -p $HOME/miniconda
+
+source ~/miniconda/bin/activate
+conda create -n toolkit2 -y python=3.11
+conda activate toolkit2
+git clone https://github.com/rockchip-linux/rknn-toolkit2.git
+cd rknn-toolkit2/rknn-toolkit2/packages
+pip install -r requirements_cp311-1.6.0.txt
+pip install rknn_toolkit2-1.6.0+81f21f4d-cp311-cp311-linux_x86_64.whl
+pip install "numpy<2.0"
+cd ../../../
+git clone https://github.com/airockchip/rknn_model_zoo.git
+conda deactivate
+conda deactivate