Docs/spec:add 3d_obstacle_perception_cn.md (#774)
Docs/spec:add 3d_obstacle_perception_cn.md (#774)

* * update a picture format

* * add hardware system installation guide cn version

* * add 3d_obstacle_perception_cn.md

ApolloAuto/apollo,xiaoxq/apollo,xiaoxq/apollo,jinghaomiao/apollo,wanglei828/apollo,wanglei828/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ycool/apollo,ApolloAuto/apollo,ycool/apollo,wanglei828/apollo,jinghaomiao/apollo,jinghaomiao/apollo,ycool/apollo,wanglei828/apollo,wanglei828/apollo,ycool/apollo,xiaoxq/apollo,xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo,xiaoxq/apollo,ycool/apollo,jinghaomiao/apollo,jinghaomiao/apollo,wanglei828/apollo