What are the top 10 robotics simulation tools available today, and how do they compare in terms of features such as physics accuracy, robot kinematics and dynamics simulation, sensor and environment modeling, support for AI and reinforcement learning workflows, ROS/ROS2 integration, multi-robot simulation capabilities, scalability for industrial and research environments, visualization and digital twin support, cloud and GPU acceleration, ease of use, extensibility through APIs and plugins, licensing flexibility, and suitability for robotics research, industrial automation, autonomous systems, and enterprise-level robotics development?