chore: adds versions and copyright

frontend/vite.config.ts

@@ -1,8 +1,19 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import { readFileSync } from 'fs';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const pkg = JSON.parse(
+  readFileSync(join(__dirname, 'package.json'), 'utf-8'),
+) as { version: string };
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    __FE_VERSION__: JSON.stringify(pkg.version),
+  },
   server: {
     port: 5173,
     proxy: {