feat(darwin): add sketchybar to yabai module

modules/nix-darwin/yabai/sketchybar/plugins/space.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# The ${SELECTED} variable is available for space components and indicates if
+# the space invoking this script (with name: ${NAME}) is currently selected:
+# https://felixkratz.github.io/SketchyBar/config/components#space----associate-mission-control-spaces-with-an-item
+
+BACKGROUND_COLOR=0x502a2d3d
+HIGHLIGHT_COLOR=0x90faafa6
+
+appearance=$(defaults read -g AppleInterfaceStyle)
+
+if [[ ${appearance} != 'Dark' ]]; then
+    BACKGROUND_COLOR=0x50f5f0f5
+fi
+
+
+
+if [ "${SELECTED}" == "true" ]; then
+    sketchybar --set ${NAME} background.color=${HIGHLIGHT_COLOR}
+else
+    sketchybar --set ${NAME} background.color=${BACKGROUND_COLOR} \
+                             blur_radius=30
+fi