feat: integrate Nitro nightly for enhanced server-side capabilities

- Add .output to .gitignore to exclude build output directory

vite.config.ts

@@ -1,8 +1,14 @@
 import { tanstackStart } from '@tanstack/react-start/plugin/vite'
 import react from '@vitejs/plugin-react-swc'
+import { nitro } from 'nitro/vite'
 import { defineConfig } from 'vite'
 import tsConfigPaths from 'vite-tsconfig-paths'
 
 export default defineConfig({
-  plugins: [tsConfigPaths(), tanstackStart(), react()]
+  plugins: [
+    tsConfigPaths(),
+    nitro({ preset: 'bun', devServer: { port: 5173 } }),
+    tanstackStart(),
+    react()
+  ]
 })