feat(serverembed): add initial HTML and SVG assets

* Create index.html for the web application entry point
* Add vite.svg as a favicon
* Update frontend.go to embed all files in the dist directory
* Modify vite.config.ts to set output directory for builds

web/vite.config.ts

@@ -1,21 +1,25 @@
-import { defineConfig } from 'vite'
-import react from '@vitejs/plugin-react'
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
-  base: '/ui/',
+  base: "/ui/",
+  build: {
+    outDir: "../pkg/serverembed/dist",
+    emptyOutDir: true,
+  },
   server: {
     port: 3000,
     proxy: {
-      '/api': {
-        target: 'http://localhost:8080',
+      "/api": {
+        target: "http://localhost:8080",
         changeOrigin: true,
       },
-      '/health': {
-        target: 'http://localhost:8080',
+      "/health": {
+        target: "http://localhost:8080",
         changeOrigin: true,
-      }
-    }
-  }
-})
+      },
+    },
+  },
+});