feat(frontend): implement basic frontend interface

frontend/vite.config.js

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vite';
+import vue from '@vitejs/plugin-vue';
+
+// Backend the dev server proxies /api (and the log websocket) to.
+const BACKEND = process.env.NUKUMIZU_API || 'http://127.0.0.1:8080';
+
+export default defineConfig({
+    plugins: [vue()],
+    server: {
+        host: '0.0.0.0',
+        port: 5173,
+        proxy: {
+            '/api': {
+                target: BACKEND,
+                changeOrigin: true,
+                ws: true
+            }
+        }
+    }
+});