added more docstrings

app.py

utils/data_processing/data_processing.py

utils/files/input.py

utils/files/norm.py

utils/files/output.py

utils/graph2D/mpl_render.py

utils/graph2D/visplot_render.py

utils/graph3D/mpl_render.py

utils/graph3D/visplot_render.py

utils/gui/pyqt/error_popup/ErrorPopup.py

utils/gui/pyqt/main_window/MainWindow.py

utils/gui/pyqt/main_window/Workers/DiscreteDataWorker.py

utils/gui/pyqt/main_window/Workers/PreProcessWorker.py

utils/gui/pyqt/main_window/Workers/RawDataWorker.py

utils/gui/pyqt/main_window/Workers/Worker.py

utils/gui/pyqt/settings/Settings.py

utils/math/data_extraction.py

utils/math/position_manipulation.py

utils/settings/SettingManager.py