Binev Tours v2.1.1 — JED Ready

JED compliance update:

• Update Server (updates.xml) for Joomla auto-update
• Manifest name changed to binev-tours (JED naming convention)
• GPL v2+ license header verified

⚠️ Users upgrading from v2.1.0: Uninstall old version first, then install v2.1.1.

Based on the original idea of JD Tours Showcase (open source).