Add new window control button style

[mhanhmk]

The original window button does not look clear, so I want to customize the window button style, but I have tried many methods without success. If it can be added, I can provide the svg file

svg file: https://www.figma.com/file/kTGhllW7BVvlLywicQfSM7/window_button?type=design&t=wx1eF4Y9Lmp5nzeh-6

[vinceliuice]

You need to replace them in icon theme folder, because orchis use symbolic icon from icon theme for those buttons