feat(html): add volume slider element (#657)

packages/html/src/define/ui/volume-slider.ts

@@ -0,0 +1,11 @@
+import { VolumeSliderElement } from '../../ui/volume-slider/volume-slider-element';
+
+import './slider';
+
+customElements.define(VolumeSliderElement.tagName, VolumeSliderElement);
+
+declare global {
+  interface HTMLElementTagNameMap {
+    [VolumeSliderElement.tagName]: VolumeSliderElement;
+  }
+}