refactor(html): split UI define modules and narrow slider imports (#659)

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

@@ -0,0 +1,9 @@
+import { SliderTrackElement } from '../../ui/slider/slider-track-element';
+
+customElements.define(SliderTrackElement.tagName, SliderTrackElement);
+
+declare global {
+  interface HTMLElementTagNameMap {
+    [SliderTrackElement.tagName]: SliderTrackElement;
+  }
+}