Improve folder handling (set workspace folder automatically)

catkin_ws/src/learn_environment/CMakeLists.txt

...ironment/include/learn_environment/custom_list_widget.hpp

.../include/learn_environment/folder_structure_constants.hpp

...ironment/include/learn_environment/notebook_converter.hpp

catkin_ws/src/learn_environment/src/notebook_converter.cpp

catkin_ws/src/learn_environment/src/task_executor.cpp

catkin_ws/src/learn_environment/src/task_parser.cpp

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