rename notebooks and eval files

...pool/evaluation_scripts/ros/ros_basics/exercise_2_eval.py

...ol/evaluation_scripts/ros/ros_basics/ros_basics_1_eval.py

...ol/evaluation_scripts/ros/ros_basics/ros_basics_2_eval.py

...ol/evaluation_scripts/ros/ros_basics/ros_basics_3_eval.py

...k_pool/solution_scripts/ros/ros_basics/ros_basics_1.ipynb

...k_pool/solution_scripts/ros/ros_basics/ros_basics_2.ipynb

...k_pool/solution_scripts/ros/ros_basics/ros_basics_3.ipynb

..._ws/src/learn_environment/task_pool/task_definitions.json