[ROS2][fix] Fix and clean launch files

Goal

• Fix the launch files
  • Before, on feat/ROS2, use sim time was not well handled in launch files, leading to some nodes running on bag replay time and others on ROS clock.
  • The TF were badly set for some cases
• Uniformize the launch files

Changes

All launch files from lidar_slam package have been modified.

GPS was removed

Tests

• Ouster with driver
• Ouster without driver
• Livox without driver
• Velodyne without driver