perf: Improve hypridle configuration handling

- Use hyprctl dispatch for dpms actions
- Remove unnecessary bash scripts
- Update configuration consistency

scripts/hypridle/screen_off.sh.example

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-hyprctl dispatch "hl.dsp.dpms({action = 'off'})"
-# alternative: wlopm --off '*'

scripts/hypridle/screen_on.sh.example

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-hyprctl dispatch "hl.dsp.dpms({action = 'on'})"
-# alternative: wlopm --on '*'