FEAT: Implemented ICAO into svelte stores

src/routes/+page.svelte

@@ -4,14 +4,9 @@
     import { toasts } from 'svelte-toasts';
     import Loading from '$lib/components/Loading.svelte';
 
-    import { page } from '$app/stores';
-    import { derived } from 'svelte/store';
-
-    // Get the ICAO parameter from the URL
-    const icao = derived(page, ($page) => $page.url.searchParams.get('icao'));
+    import { icao } from '$lib/stores/icao';
 </script>
 
-
 <div style="display: none;">
     {toasts.add({
         title: 'Welcome',