Add ultrasonic and infrared sensors to Eddie

[arya-ebrahimi]

This pull request aims to add infrared and ultrasonic sensors to the eddiebot_description package.

Two URDF files are created to represent the IR and Ultrasonic sensors using the gpu_lidar since there is no dedicated Ultrasonic or IR sensor currently for Gazebo. (see gazebosim/gz-sensors#19)
Each file contains the following:

1. Stand joint: connects the parent link to the stand link.
2. Stand link: a cuboid on which the sensor is placed.
3. Sensor joint: connects stand and sensor links.
4. Sensor link: visualizes the sensor using sensor STL mesh file, which is added in the meshes folder.
5. dummy joint: corrects the sensor's ray direction.
6. dummy link: reference of the sensor.
7. sensor: gpu_lidar sensor with appropriate settings for each type of sensor.

The main difference between these two sensors is the sensor's range. The ultrasonic sensor's ray supports a wider range than the IR sensors.

Five instances of these sensors (two Ultrasonic and three IR) are created and mounted on Eddie's base.

Sensor's ray visualized in Gazebo alongside the gz topic of the first infrared sensor:

[arashsm79]

Phenomenal job! Thanks.