feat(resume): add PDF download functionality with server endpoint

- Add useResumePdf composable for client-side PDF download handling
- Implement /api/resume/pdf server endpoint for PDF generation
- Add puppeteer and @sparticuz/chromium dependencies for PDF rendering
- Add puppeteer-core for headless browser automation
- Update Vercel configuration to support PDF generation
- Include loading state management and error handling with toast notifications
- Implement blob download with automatic filename generation
- Add memory leak prevention through object URL revocation

vercel.json

@@ -1,4 +1,10 @@
 {
+  "functions": {
+    "server/api/resume/pdf.get.ts": {
+      "memory": 1024,
+      "maxDuration": 10
+    }
+  },
   "rewrites": [
     {
       "source": "/stats/js/script.js",