feat: add date/time picker and fix launcherVersion initialization error

src/lib/components/ui/calendar/calendar-grid-row.svelte

@@ -0,0 +1,12 @@
+<script lang="ts">
+	import { Calendar as CalendarPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: CalendarPrimitive.GridRowProps = $props();
+</script>
+
+<CalendarPrimitive.GridRow bind:ref class={cn("flex", className)} {...restProps} />