added sidebar component, added individual workspace page

src/lib/components/ui/breadcrumb/breadcrumb.svelte

@@ -0,0 +1,21 @@
+<script lang="ts">
+	import type { WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLElement>> = $props();
+</script>
+
+<nav
+	bind:this={ref}
+	data-slot="breadcrumb"
+	class={className}
+	aria-label="breadcrumb"
+	{...restProps}
+>
+	{@render children?.()}
+</nav>