Add initial infrastructure and backup scripts for Gitea and homelab deployment

- Create README.md with project layout and quick start instructions
- Implement backup scripts for Gitea, including database and repository exports
- Add systemd service and timer for automated Gitea backups
- Develop bootstrap scripts for homelab and VPS setup
- Document architecture and restore procedures
- Configure Caddy reverse proxy and Docker Compose for service management
- Establish secrets management guidelines

backups/systemd/gitea-backup.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Nightly Gitea backup timer
+
+[Timer]
+OnCalendar=*-*-* 02:30:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target