Highlighting a user-provided Gazebo repository for RealSense D435

Hi everyone,

RealSense community member takanotume24  has published a Gazebo repository for Turtlebot3 waffle pi and RealSense D435 and invites other RealSense users who want to carry out Gazebo simulation to visit their GitHub and provide feedback in the repository if errors are encountered.

The details can be found here:

https://github.com/IntelRealSense/realsense-ros/issues/1170#issuecomment-620132790