added shadcn and started PROJECT.md for tracking

src/lib/components/ui/select/select-group.svelte

@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { Select as SelectPrimitive } from "bits-ui";
+	import { cn } from "#lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: SelectPrimitive.GroupProps = $props();
+</script>
+
+<SelectPrimitive.Group
+	bind:ref
+	data-slot="select-group"
+	class={cn("scroll-my-1 p-1", className)}
+	{...restProps}
+/>