Added Stretch Mujoco, Gazebo and ROS2 simulation (#8)

Stretch ROS2 Simulation is unavailable until hello-robot/stretch_ros2#194 is available

Author: hello-robot-shehab

docs/overrides/home.html

@@ -430,7 +430,10 @@ <h2>
             </span>
             Simulating Stretch
         </h2>
-        <a href="https://github.com/google-deepmind/mujoco_menagerie/tree/main/hello_robot_stretch">MuJoCo</a>
+        <a href="https://github.com/hello-robot/stretch_mujoco">Stretch Mujoco</a>
+        <a href="https://github.com/hello-robot/stretch_ros2/tree/humble/stretch_simulation">Stretch ROS2 Simulation</a>
+        <a href="https://github.com/CardiffUniversityComputationalRobotics/stretch_ros2">Community ROS2 with Gazebo</a>
+        <a href="https://github.com/google-deepmind/mujoco_menagerie/tree/main/hello_robot_stretch">Deepmind MuJoCo Menagerie</a>
         <a href="https://forum.hello-robot.com/t/physical-aspects-of-the-robot-for-simulation/792">Simulation Parameters</a>
     </div>