fix ui package, use sv to create

recreated package using sv, marking correctly as a library. seems I was
missing some sveltekit tooling somewhere along the way otherwise.

src/lib/Spinner.svelte

@@ -0,0 +1,53 @@
+<script lang="ts">
+	let { size }: { size: string } = $props();
+</script>
+
+<div class="lds-ring" style="--size: {size}">
+	<div></div>
+	<div></div>
+	<div></div>
+	<div></div>
+</div>
+
+<style>
+	.lds-ring {
+		display: inline-block;
+		position: relative;
+		width: var(--size);
+		height: var(--size);
+	}
+
+	.lds-ring div {
+		box-sizing: border-box;
+		display: block;
+		position: absolute;
+		width: calc(var(--size) * 0.8);
+		height: calc(var(--size) * 0.8);
+		margin: max(calc(var(--size) * 0.1), 2px);
+		border: max(calc(var(--size) * 0.1), 2px) solid #fff;
+		border-radius: 50%;
+		animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
+		border-color: #fff transparent transparent transparent;
+	}
+
+	.lds-ring div:nth-child(1) {
+		animation-delay: -0.45s;
+	}
+
+	.lds-ring div:nth-child(2) {
+		animation-delay: -0.3s;
+	}
+
+	.lds-ring div:nth-child(3) {
+		animation-delay: -0.15s;
+	}
+
+	@keyframes lds-ring {
+		0% {
+			transform: rotate(0deg);
+		}
+		100% {
+			transform: rotate(360deg);
+		}
+	}
+</style>