Add navigation to World Travel page and create server load function for country regions

src/routes/worldtravel/[countrycode]/+page.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+    export let data;
+</script>
+
+{#each data.regions as region}
+    <p>{region.name}</p>
+{/each}