Update version to 0.9.0, add DateRangeDropdown component, enhance LodgingModal with price step, and add invalid date range message

frontend/src/routes/datetest/+page.svelte

@@ -0,0 +1,13 @@
+<script>
+	import DateRangeDropdown from '$lib/components/DateRangeDropdown.svelte';
+
+	let utcStartDate = '';
+	let utcEndDate = '';
+</script>
+
+<DateRangeDropdown bind:utcStartDate bind:utcEndDate />
+
+<p>{new Date(utcStartDate).toLocaleString()} - {new Date(utcEndDate).toLocaleString()}</p>
+
+<p>UTC Start Date: {utcStartDate}</p>
+<p>UTC End Date: {utcEndDate}</p>