refactor(uishell): rename files

src/components/UIShell/UIShellNav/UIShellNavSubmenu.svelte

@@ -1,54 +0,0 @@
-<script>
-  export let text = undefined;
-  export let iconDescription = 'Expand/Collapse';
-  export let expanded = false;
-  import ChevronDown16 from 'carbon-icons-svelte/lib/ChevronDown16';
-  import { cx } from '../../../lib';
-
-  let listItemSubMenu = undefined;
-
-  const mouseUp = ({ target }) => {
-    if (listItemSubMenu) {
-      if (listItemSubMenu.contains(target) || target === listItemSubMenu) {
-        expanded = !expanded;
-      } else {
-        if (expanded) {
-          expanded = false;
-        }
-      }
-    }
-  };
-</script>
-
-<svelte:window on:mouseup={mouseUp} />
-
-<li class={cx('--header__submenu')} title={iconDescription}>
-  <a
-    bind:this={listItemSubMenu}
-    aria-haspopup="menu"
-    aria-expanded={expanded}
-    class={cx('--header__menu-item', '--header__menu-title')}
-    role="menuitem"
-    tabindex="0"
-    aria-label={text}
-    href="javascript:void(0)"
-    on:keydown
-    on:keydown={({ key }) => {
-      if (key === 'Enter') {
-        expanded = !expanded;
-      }
-    }}
-    on:click
-    on:mouseover
-    on:mouseenter
-    on:mouseleave
-    on:keyup
-    on:focus
-    on:blur>
-    {text}
-    <ChevronDown16 class={cx('--header__menu-arrow')} aria-label={iconDescription} />
-  </a>
-  <ul aria-label={text} class={cx('--header__menu')} role="menu">
-    <slot />
-  </ul>
-</li>