openEuler 21.03 新增ROS-base第三方库依赖软件

目前，ROS SIG已经完成了基于openEuler20.09 和20.03 LTS版本的ROS-base软件移植和第三方库移植，并继续移植ROS-desktop相关软件，跟进openEuler 21.03创新版本迭代。已提交PR：!49:sig-ROS 申请在21.03中增加新特性：新增ROS-base依赖的第三方库。

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@anchuanxu ROS-base特性相关文档请3月2号前提交到docs仓库master分支哈，方便开发者了解特性

@anchuanxu ROS-base特性相关文档请3月2号前提交到docs仓库master分支哈，方便开发者了解特性

@qiaominna 本次21.03 ROS相关新特性暂时不会加入，延迟到了21.09

@qiaominna 本次21.03 ROS相关新特性暂时不会加入，延迟到了21.09

openEuler / release-management