Update Clean.py

[Swish78]

Hi everyone,

I've made some updates to the code in this pull request to enhance the make_button and make_checkbutton functions by using ttk from tkinter. These changes improve the appearance of buttons and checkboxes in our application.

Issue Number: #101

Here's a brief summary of the changes:

• Updated the make_button function to use ttk.Button for better appearance.
• Enhanced the make_checkbutton function by using ttk.Checkbutton and set the initial state to "selected" for better user experience.

Please review the changes and let me know your thoughts. If there are any further improvements or suggestions, please feel free to share them.