`kblayoutmanager` switches layouts.
Layouts are read from `$KBLAYOUTS`.
An extra file, `~/.local/bin/statusbar/lang` is added in the commit,
which adds layout indicator to i3blocks.
Example binds are `Super+Alt+Space` added to both i3/config and
sxhkd/config.
Example `KBLAYOUTS` are US Standard Layout and Global UK layout.
Special thanks to KEZ-
Jetbrains products (intellij Idea and pycharm) and Netbeans draws grey windows in dwm(upstream bug).
Intellij Idea will work with this two env vars. for pycharm, affected plebs may need to install the wmname tool (community repository)
