Right now, colors are hardcoded in the Config in main.zig.
This commit also adds a couple of new keybinds for navigating between
windows. All keybinds are hardcoded as well right now.
For now, it's hardcoded to be a right-primary/stack layout (similar to
dwm but with the primary on the right) with the primary window getting
55% of the width of the screen.
