tcl/tk Doku: https://www.tcl.tk/man/tcl8.6/TkCmd/contents.html
TkDocs: https://tkdocs.com/
customtkinter Doku: https://customtkinter.tomschimansky.com/
Icons: https://uxwing.com/
Pillow Doku: https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.Image.convert
Erklärung Convert Methode: https://www.geeksforgeeks.org/python-pil-image-convert-method/
