docs: add neuronex ai function install guide (#138)

Author: shixiangw

.gitignore

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 .DS_Store
+.history/
+.idea/

directory.json

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         {
           "title": "申请和安装许可证",
           "path": "installation/license_setting"
+        },
+        {
+          "title": "安装 AI 功能",
+          "path": "installation/ai"
         }
       ]
     },
@@ -1145,6 +1149,10 @@
         {
           "title": "Application and Installation License",
           "path": "installation/license_setting"
+        },
+        {
+          "title": "Install AI Function",
+          "path": "installation/ai"
         }
       ]
     },

en_US/installation/_assets/neuronex-ai-install.png

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+# NeuronEX AI Function Installation Package Installation Guide
+
+1. Download the corresponding installation package according to the current environment. For example: neuronex-3.6.0-beta.3-linux-amd64.deb.
+2. Install NeuronEX with reference to the documentation: [install NeuronEX](./introduction.md)
+3. Enter the AI function module directory. The default directory for the AI function of NeuronEX managed by systemd is: /opt/neuronex/software/neuronex-ai.
+4. The AI function of NeuronEX uses uv as the project management tool. If uv is not installed, it needs to be installed first. For details, refer to: [Installing uv](https://docs.astral.sh/uv/getting-started/installation/)
+5. After successfully installing uv, use the following command to test whether the AI function can be started normally: uv sync && cd src/apps_entry && uv run main.py.
+6. If the above command shows the following prompt, it means that the AI - related dependent libraries have been installed successfully:
+![neuronex ai hint](./_assets/neuronex-ai-install.png)
+7. If the environment cannot install uv and the dependent libraries normally, you can find available domestic mirror repositories, or use the NeuronEX container images with the -ai or -ai - arm64 suffix to deploy the NeuronEX service. The images already have a complete AI function. 

en_US/installation/ai.md

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+# NeuronEX AI 功能安装包安装指南
+
+1. 根据当前环境, 下载对应的安装包, 例如: neuronex-3.6.0-beta.3-linux-amd64.deb
+2. 参考文档安装 NeuronEX: [安装 NeuronEX](./introduction.md)
+3. 进入 AI 功能模块目录, systemd 托管的 NeuronEX 的 AI 功能默认目录是: /opt/neuronex/software/neuronex-ai
+4. NeuronEX 的 AI 功能采用 uv 作为项目管理工具, 如果没有 uv, 需要先安装, 具体参考: [Installing uv](https://docs.astral.sh/uv/getting-started/installation/)
+5. uv 安装成功后, 使用如下命令测试 AI 功能是否能正常启动: uv sync &&  cd src/apps_entry && uv run main.py
+6. 如果上面的命令出现如下提示, 则表示 AI 相关依赖库已安装成功:
+![neuronex ai hint](./_assets/neuronex-ai-install.png)
+7. 如果所处环境无法正常安装 uv 和依赖库, 可以寻找可用的国内镜像库, 或者使用 NeuronEX 带 -ai 或者 -ai-arm64 后缀的容器镜像来部署 NeuronEX 服务, 镜像中已经有完整的 AI 功能.