Beta v0.8.0

• Updated linux distro to ubuntu 20.04 LTS
• Updated ROS2 distro to Foxy
• Added webots simulation world for Physical based simulation
• Automated cloud based simulation on Github Actions CI
• New Timed Elastic Band (TEB) Controller achieving high speed and precision
• Added package Titan for simulation mode
• Compatibility with ros2_cross_compile for packaging x86_64/arm64 ros2 packages
• Refactored cetautomatix
• Simulation mode for assurancetourix, drive and pharaon
• Fixed many bugs thanks to simulation mode, including race conditions between modules