Resolve "remove --config_dir option  in lpad_query script"

Closes #2

See merge request jk7683/grk2450-fireworks-tutorial!4

Resolve "lpad_query command not working without -l option"

Closes #1

See merge request jk7683/grk2450-fireworks-tutorial!3

added a substitute for the unsupported CLI visualize feature

See merge request jk7683/grk2450-fireworks-tutorial!2

Merge branch 'master' of https://git.scc.kit.edu/jk7683/grk2450-fireworks-tutorial into new_visualizer

FilePad demonstration files in demos subfolder

See merge request jk7683/grk2450-fireworks-tutorial!1