Convert backend/web from submodule to regular directory

backend/web/src/lib/components/Menu.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+  import {uiState} from "$lib/state/ui.svelte"
+  let {label='', icon='', link=''} = $props();
+</script>
+
+<div class="my-2 block">
+    <a class="p-2    w-full text-left menuitem block" href={link}>
+        <i class={[icon]}></i>
+        {#if uiState.menuContentVisible}
+            <span class="ml-4">{label}</span>
+        {/if}
+    </a>
+</div>