Feat/axis simulation node

[m-sanchez-rico]

This pull request introduces significant changes to the Axis PTZ camera simulation, including the addition of new nodes, configuration files, and launch files, as well as the removal of outdated configurations. The most important changes are detailed below:

New Nodes and Scripts:

• Added axis_ptz_sim.py to control an Axis PTZ camera in simulation, including publishers, subscribers, and services for camera control.
• Added axis_ptz_sim_node.py to initialize and start the AxisPTZSim node.

Configuration Changes:

• Added a new configuration file axis_sim_ptz_config.yaml for the PTZ simulation with parameters for joint controllers and camera limits.
• Removed the outdated configuration file axis_gazebo_ptz_config.yaml.

Launch Files:

• Added a new launch file axis_ptz_sim.launch to start the PTZ simulation node with the appropriate configuration.
• Removed the outdated launch file axis_gazebo.launch.

CMakeLists Update:

• Updated CMakeLists.txt to include the installation of new Python scripts for the PTZ simulation.