Modernise website by migrating to vite

vite.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from 'vite';
+import { viteSingleFile } from 'vite-plugin-singlefile';
+
+export default defineConfig({
+  plugins: [viteSingleFile()],
+  define: {
+    __BUILD_DATE__: Date.now(),
+  },
+  build: {
+    target: 'es2022',
+    cssCodeSplit: false,
+    assetsInlineLimit: Number.MAX_SAFE_INTEGER,
+  },
+  server: {
+    open: true,
+  },
+});