refactor(example): use tsconfig and change entries to ts (#3575)

examples/api/vite.config.ts

@@ -0,0 +1,34 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+import { defineConfig } from 'vite'
+import Unocss from 'unocss/vite'
+import { svelte } from '@sveltejs/vite-plugin-svelte'
+import process from 'process'
+
+const host = process.env.TAURI_DEV_HOST
+
+// https://vitejs.dev/config/
+export default defineConfig(async () => {
+  return {
+    plugins: [Unocss(), svelte()],
+    build: {
+      rollupOptions: {
+        output: {
+          entryFileNames: `assets/[name].js`,
+          chunkFileNames: `assets/[name].js`,
+          assetFileNames: `assets/[name].[ext]`
+        }
+      }
+    },
+    server: {
+      host: host || false,
+      port: 5173,
+      strictPort: true,
+      fs: {
+        allow: ['.']
+      }
+    }
+  }
+})