Improvement of the gen-launch-config.sh script

The script created before could not work without a base launch configuration file.

Changes:

• The analysis.launch file is no longer ignored, and serve as an example for generation script.
• A Launch Group Configuration file named atl_launch_group.launch is created by the generation script. It allows you to run all launch configurations at once to check that there are no console errors. A delay between each execution of the launch group can be set in the script.
• All launch configurations file are created in the launch_configurations/ directory.