Waveform playerbar improvements (#1781)

* Defer waveform loading & show default seek bar as fallback

* Add configurable waveform loading delay

* Add 2s default value for waveform loading delay

* disable transcoding config on waveform url

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Co-authored-by: jeffvli <jeffvictorli@gmail.com>

src/renderer/store/settings.store.ts

@@ -305,6 +305,7 @@ const PlayerbarSliderSchema = z.object({
     barGap: z.number(),
     barRadius: z.number(),
     barWidth: z.number(),
+    loadingDelay: z.number(),
     type: PlayerbarSliderTypeSchema,
 });
 
@@ -1148,6 +1149,7 @@ const initialState: SettingsState = {
             barGap: 1,
             barRadius: 4,
             barWidth: 2,
+            loadingDelay: 2,
             type: PlayerbarSliderType.SLIDER,
         },
         playerItems,