feat(web): expand/collapse sidebar (#16768)

* feat: expand/collapse sidebar

* fix: general PR cleanup

- add skip link unit test
- remove unused tailwind styles
- adjust asset grid spacing
- fix event propogation

* fix: cleaning up event listeners

* fix: purchase modal and button on small screens

* fix: explicit tailwind classes

* fix: no animation on initial page load

* fix: sidebar spacing and reactivity

* chore: reverting changes to icons in nav and account info panel

* fix: remove left margin from the asset grid after merging in new timeline

* chore: extract search-bar changes for a separate PR

* fix: add margin to memories

web/src/lib/components/shared-components/tree/tree.svelte

@@ -32,6 +32,7 @@
   href={getLink(path)}
   title={value}
   class={`flex flex-grow place-items-center pl-2 py-1 text-sm rounded-lg hover:bg-slate-200 dark:hover:bg-slate-800 hover:font-semibold ${isTarget ? 'bg-slate-100 dark:bg-slate-700 font-semibold text-immich-primary dark:text-immich-dark-primary' : 'dark:text-gray-200'}`}
+  data-sveltekit-keepfocus
 >
   <button type="button" {onclick} class={Object.values(tree).length === 0 ? 'invisible' : ''}>
     <Icon path={isOpen ? mdiChevronDown : mdiChevronRight} class="text-gray-400" size={20} />