树莓派：安装Tensorflow Lite

        因为要在树莓派上部署模型，所以要用到Tesnorflow，对于树莓派来说，官方推荐下载解释器tflite-runtime。 需要使用虚拟环境下载安装，因为树莓派系统里不许使用pip（害怕和apt起冲突），用了就会报错：

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.
 
If you wish to install a non-Debian-packaged Python package,
create a virtual environment using python3 -m venv path/to/venv.
Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
sure you have python3-full installed.
 
If you wish to install a non-Debian packaged Python application,
it may be easiest to use pipx install xyz, which will manage a
virtual environment for you. Make sure you have pipx installed.
 
See /usr/share/doc/python3.11/README.venv for more information.
 
note: If you believe this is a mistake, ple