Get tp server and ui dev server to talk to each other

showbits-thermal-printer-ui/vite.config.ts

@@ -9,4 +9,7 @@ export default defineConfig({
   resolve: {
     alias: { "@": fileURLToPath(new URL("./src", import.meta.url)) },
   },
+  server: {
+    proxy: { "/api": "http://localhost:8080" },
+  },
 });