make debounce functionality into a reusable ting

crates/hedz_reloaded/src/client/settings.rs

@@ -1,14 +1,10 @@
 use bevy::prelude::*;
 use bevy_pkv::prelude::*;
 
-use crate::client::audio::SoundSettings;
-
-#[derive(Resource)]
-struct SaveTimer(Timer);
+use crate::{client::audio::SoundSettings, utils::Debounce};
 
 pub fn plugin(app: &mut App) {
     app.insert_resource(PkvStore::new("Rustunit", "HEDZ"));
-    app.insert_resource(SaveTimer(Timer::from_seconds(1.0, TimerMode::Once)));
 
     app.add_systems(Update, persist_settings);
     app.add_systems(Startup, load_settings);
@@ -17,16 +13,13 @@ pub fn plugin(app: &mut App) {
 fn persist_settings(
     settings: Res<SoundSettings>,
     mut pkv: ResMut<PkvStore>,
-    mut timer: ResMut<SaveTimer>,
-    time: Res<Time>,
+    mut debounce: Debounce<1000>,
 ) -> Result {
     if settings.is_changed() {
-        timer.0.reset();
+        debounce.reset();
     }
 
-    timer.0.tick(time.delta());
-
-    if timer.0.just_finished() {
+    if debounce.finished() {
         pkv.set("audio", &*settings)?;
     }