feat: implement osu! installation validation

src/routes/+layout.svelte

@@ -1,17 +1,19 @@
 <script lang="ts">
   import Titlebar from '@/components/ui/titlebar/titlebar.svelte';
   import '../app.css';
-  import { setupValues } from '@/global';
+  import { current_view, setupValues } from '@/global';
   import { onMount } from 'svelte';
   import OsuCursor from '@/components/ui/osu-cursor/OsuCursor.svelte';
   import { cursorSmoothening, customCursor, reduceAnimations, userSettings } from '@/userSettings';
   import { Buffer } from 'buffer';
+  import SetupWizard from '../pages/SetupWizard.svelte';
+  import Launch from '../pages/Launch.svelte';
   let { children } = $props();
 
   onMount(async () => {
     window.Buffer = Buffer;
     setupValues();
-    await $userSettings.init();
+    const firstStartup = await $userSettings.init();
 
     const config_custom_cursor = $userSettings.value('custom_cursor');
     const config_cursor_smoothening = $userSettings.value('cursor_smoothening');
@@ -24,6 +26,12 @@
     customCursor.subscribe((val) => config_custom_cursor.set(val));
     cursorSmoothening.subscribe((val) => config_cursor_smoothening.set(val));
     reduceAnimations.subscribe((val) => config_reduce_animations.set(val));
+
+    if (!firstStartup) {
+      current_view.set(Launch);
+      return;
+    }
+    /* current_view.set(SetupWizard); */
   });
 </script>