feat: 2FA/TOTP, config templates (v0.11.4 Beta)

- 2FA: TOTP setup wizard in Settings, QR code enrollment, login second-step, password-confirmed disable
- Config templates: reusable DNS/NTP/syslog config sets pushed to selected devices via RouterOS API

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mikrotik-manager-frontend",
-  "version": "0.11.3-beta",
+  "version": "0.11.4-beta",
   "private": true,
   "type": "module",
   "scripts": {