Improve i3 configs

+ Use `pulsemixer` for audion volume control
+ Update polybar configs to not use sudo when running commands
+ Add Logout to polybar menu foor logging out of system user
+ Add brightness module to polybar to show backlight percentage 0-100

.config/yakuakerc

@@ -40,7 +40,3 @@ switch-to-session-9=none
 toggle-session-keyboard-input=none
 toggle-session-prevent-closing=none
 toggle-window-state=Meta+z
-
-[Window]
-Height=40
-Width=80