preview all windows

Description

Allows you to preview all window image thumbnails under the current display, and when clicked, it will jump to the corresponding application window.

I used two X11 extensions — XComposite's off-screen storage feature and XRender — to capture the window image.

[!WARNING]

The project is still in development.

If you're using patches like actualfullscreen or awesomebar, please uncomment the corresponding one in config.def.h.

` #define ACTUALFULLSCREEN #define AWESOMEBAR`

This patch is like the above, with keys to select windows in the preview. Mod + j/Mod + k to setect a window, Mod + Return to open it.