add sketchybar mac settings and plugins, add skhd new key binds

configs/sketchybar_m/plugins/battery.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+PERCENTAGE=$(pmset -g batt | grep -Eo "\d+%" | cut -d% -f1)
+CHARGING=$(pmset -g batt | grep 'AC Power')
+
+if [ $PERCENTAGE = "" ]; then
+  exit 0
+fi
+
+case ${PERCENTAGE} in
+  9[0-9]|100) ICON="􀛨"
+  ;;
+  [6-8][0-9]) ICON="􀺸"
+  ;;
+  [3-5][0-9]) ICON="􀺶"
+  ;;
+  [1-2][0-9]) ICON="􀛩"
+  ;;
+  *) ICON="􀛪"
+esac
+
+if [[ $CHARGING != "" ]]; then
+  ICON="􀢋"
+fi
+
+# The item invoking this script (name $NAME) will get its icon and label
+# updated with the current battery status
+sketchybar --set $NAME icon="$ICON" label="${PERCENTAGE}%"