🎨 Add new UI components: Container, Grid, Header, ModeToggle, Search, SvgCard & CopySvg, DownloadSvg with improved functionality and styling

src/components/grid.svelte

@@ -0,0 +1,16 @@
+<script lang="ts">
+  import type { Snippet } from "svelte";
+  import { cn } from "@/utils/cn";
+
+  let { className, children }: { className?: string; children?: Snippet } =
+    $props();
+</script>
+
+<div
+  class={cn(
+    "grid grid-cols-1 gap-4 sm:grid-cols-2 md:grid-cols-2 lg:grid-cols-4 xl:grid-cols-5",
+    className,
+  )}
+>
+  {@render children?.()}
+</div>