Fix Spacing, Rofi Keybindings, & Use ~/.scripts

- Fix spacing around and between windows
- Add keybindings for rofi-rbw & control center
- Replace keybindings for actions with rofi menu
- Move system restore processes to the end of startup hook
- Use scripts in ~/.scripts with command line arguments where possible
- Remove unnecessary shebangs at the start of scripts
- Replace polybar powermenu with clickable icon that launches rofi

polybar/scripts/updates-pacman-aurhelper.sh

@@ -1,6 +1,4 @@
 #!/bin/bash
-#!/bin/sh
-
 if ! num_updates=$(paru -Qu 2>/dev/null | wc -l); then
     # if ! updates_aur=$(yay -Qum 2>/dev/null | wc -l); then
     # if ! updates_aur=$(cower -u 2> /dev/null | wc -l); then