feat: NovaCPX v1.0.0 initial scaffold

Full hosting control panel with 3 tiers: Admin, Reseller, User.
- install.sh: unattended installer for Ubuntu 20/22/24 + Debian 11/12
- PHP multi-version (7.4/8.1/8.2/8.3), Apache2/nginx choice, MySQL, PostgreSQL
- BIND9 DNS, Postfix+Dovecot mail, ProFTPD, Certbot SSL, UFW, Fail2Ban
- 18-table DB schema with audit log and version tracking
- PHP REST API (auth, system/updates, server stats, service control)
- Admin panel: dark dashboard, service manager, git-based update system
- User panel: usage rings + feature card grid (distinct from cPanel)
- VERSION file: git-tracked; Admin > Updates panel shows/applies git commits

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

.gitignore

@@ -0,0 +1,9 @@
+# NovaCPX .gitignore
+/etc/novacpx/config.ini
+panel/api/config.php
+*.log
+*.tmp
+/var/
+node_modules/
+.DS_Store
+Thumbs.db