Add initial project setup with static files and configuration

- Create robots.txt to allow all user agents and specify sitemap location
- Add site.webmanifest for PWA support with app details
- Initialize sitemap.xml with the homepage URL and metadata
- Set up svelte.config.js for SvelteKit with static adapter and prerendering
- Configure TypeScript with tsconfig.json for strict type checking and module resolution
- Establish Vite configuration in vite.config.ts for SvelteKit integration

static/favicon.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Squiggleverse">
+  <rect width="64" height="64" rx="14" fill="#160030" />
+  <path d="M15 34c0-10 7-18 17-18 8 0 14 5 14 12 0 8-6 13-14 13h-4" fill="none" stroke="#f1e7ff" stroke-width="7" stroke-linecap="round" />
+  <circle cx="44" cy="18" r="4" fill="#43d8ff" />
+  <circle cx="21" cy="48" r="4" fill="#b58cff" />
+</svg>

static/robots.txt

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+User-agent: *
+Allow: /
+
+Sitemap: https://squiggleverse.com/sitemap.xml

static/site.webmanifest

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+{
+  "name": "Squiggleverse",
+  "short_name": "Squiggleverse",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#070014",
+  "theme_color": "#160030",
+  "icons": [
+    {
+      "src": "/favicon.svg",
+      "sizes": "64x64",
+      "type": "image/svg+xml"
+    }
+  ]
+}

static/sitemap.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="https://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://squiggleverse.com/</loc>
+    <changefreq>monthly</changefreq>
+    <priority>1.0</priority>
+  </url>
+</urlset>