Reorganize proxmox documentation into subdirectories per LXC/VM

- Create cluster/ for Proxmox cluster infrastructure (SSH guide, HA monitor, UPS)
- Create lxc108-oracle/ for Oracle Database documentation and scripts
- Create vm201-windows/ for Windows 11 VM docs and SSL certificate scripts
- Add SSL certificate monitoring scripts (check-ssl-certificates.ps1, monitor-ssl-certificates.sh)
- Remove archived VM107 references (decommissioned)
- Update all cross-references between files
- Update main README.md with new structure and navigation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

proxmox/cluster/ups/config/ups.conf

@@ -0,0 +1,7 @@
+[nutdev1]
+    driver = nutdrv_qx
+    port = auto
+    vendorid = 0665
+    productid = 5161
+    subdriver = cypress
+    desc = "UPS Cypress via USB"