add use linux sdk

docs/cn/faq/use_sdk_on_linux.md

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+# Linux上C++部署
+
+1. 编译完成运行，提示找不到.so文件
+
+在执行二进制文件时，需要能够在环境变量中找到FastDeploy相关的库文件。FastDeploy提供了辅助脚本来帮助完成。
+
+执行如下命令，即可将库路径导入到LD_LIBRARY_PATH中
+
+```
+source /Downloads/fastdeploy-linux-x64-1.0.0/fastdeploy_init.sh
+```
+
+再重新执行即可。 注意此命令执行后仅在当前的命令环境中生效（切换一个新的终端窗口，或关闭窗口重新打开后会无效），如若需要在系统中持续生效，可将这些环境变量加入到`~/.bashrc`文件中。

docs/en/faq/use_sdk_on_linux.md

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+# C++ Deployment on Linux
+
+1. After compilation, and execute the binary file, throw error `error while loading shared libraries`
+
+When we execute the binary file, it requires the dependent libraries can be found in the system, otherwise, it throws error like below
+```
+./infer_ppyoloe_demo: error while loading shared libraries: libonnxruntime.so.1.12.0: cannot open shared object file: No such file or directory
+```
+
+FastDeploy provides a shell scripts to help export the libraries path to `LD_LIBRARY_PATH`, execute the follwing command
+
+```
+source /Downloads/fastdeploy-linux-x64-1.0.0/fastdeploy_init.sh
+```
+
+And now you can execute the binary file again.