Topbar remake (#752)

* feat: begin work on topbar refresh

* feat: implement search input functionality

* feat: add ScannerModal component based on scanner page

* feat: add toggle to enable legacy topbar, remove scanner page

* feat: update scanner menu item to use SidebarMenuButton for legacy header support

* chore: lint

* style: make margin and padding more consistent

* feat: fun hack

* fix: remove uneeded log and class=""

frontend/pages/tools.vue

@@ -1,7 +1,7 @@
 <template>
   <div>
     <AppImportDialog />
-    <BaseContainer class="mb-6 flex flex-col gap-4">
+    <BaseContainer class="flex flex-col gap-4">
       <BaseCard>
         <template #title>
           <BaseSectionHeader>