tmux.conf: include options for highlighting active window.

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>
bashrc configs: separate out generic Archlinux configs

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>
bashrc configs: move ls aliases to bash/common

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>