Create a Python script to update the system

[Jarmos-san]

At the moment there is a ZSH alias named update which updates the system with one easy command. But the issue with with the alias is, the script is not robust enough and difficult to write and improve further. Hence its recommended to use Python (with its standard library) to write a robust script. A bit of the script is already written but it needs to be tested further before using it full-time.