chore: add sway and waybar config

waybar/scripts/check_battery.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+bat=/sys/class/power_supply/BAT1
+CRIT=${1:-15}
+
+FILE=~/.config/waybar/scripts/notified
+
+stat=$(cat $bat/status)
+perc=$(cat $bat/capacity)
+
+if [[ $perc -le $CRIT ]] && [[ $stat == "Discharging" ]]; then
+  if [[ ! -f "$FILE" ]]; then
+    notify-send --urgency=critical --icon=dialog-warning "Battery Low" "Current charge: $perc%"
+    touch $FILE
+  fi
+elif [[ -f "$FILE" ]]; then
+  rm $FILE
+fi