Add S-C-v for xt script, which types out primary clipboard

dotfiles/config/i3/config

 bindsym --release $mod+Ctrl+grave           exec "xdotool .config/i3/macros/grave.xdotool"
 bindsym --release $mod+Ctrl+bracketleft     exec "xdotool .config/i3/macros/bracketleft.xdotool"
 bindsym --release $mod+Ctrl+bracketright    exec "xdotool .config/i3/macros/bracketright.xdotool"
+bindsym --release $mod+Ctrl+v               exec "bash .config/i3/macros/xt.dash"