feat: cool age counter

src/components/Age.svelte

@@ -0,0 +1,22 @@
+<script lang="ts">
+	import { onMount } from "svelte";
+
+	let age = $state("");
+
+	onMount(() => {
+		const interval = setInterval(() => {
+			// only people who can read code can see my birthday
+			const birthday = new Date("03/02/2010");
+			const currentDate = new Date();
+
+			const diffInMs = currentDate.getTime() - birthday.getTime();
+			const msInYear = 365.25 * 24 * 60 * 60 * 1000;
+
+			age = (diffInMs / msInYear).toFixed(14);
+		}, 10);
+
+		return () => clearInterval(interval);
+	});
+</script>
+
+<span class="font-mono">{age}</span>