added sidebar component, added individual workspace page

src/lib/components/ui/dropdown-menu/dropdown-menu-radio-group.svelte

@@ -0,0 +1,16 @@
+<script lang="ts">
+	import { DropdownMenu as DropdownMenuPrimitive } from "bits-ui";
+
+	let {
+		ref = $bindable(null),
+		value = $bindable(),
+		...restProps
+	}: DropdownMenuPrimitive.RadioGroupProps = $props();
+</script>
+
+<DropdownMenuPrimitive.RadioGroup
+	bind:ref
+	bind:value
+	data-slot="dropdown-menu-radio-group"
+	{...restProps}
+/>