Oracle DR: Fix verification commands and auto-start services

weekly-dr-test-proxmox.sh:
- Replace Unix commands (echo, grep) with PowerShell equivalents
- Use PowerShell Select-String for database status verification
- Fix table count query to work properly through SSH

rman_restore_from_zero.ps1:
- Set Oracle service to AUTOMATIC startup (was manual)
- Set Listener service to AUTOMATIC startup
- Auto-start Listener after database restore
- Add fallback to lsnrctl if service start fails

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

oracle/standby-server-scripts/weekly-dr-test-proxmox.sh

@@ -373,11 +373,13 @@ run_dr_test() {
                 step_start=$(date +%s)
                 log "STEP 5: Verifying database"
 
+                # Use PowerShell to query database status
                 db_status=$(ssh -p "$DR_VM_PORT" "$DR_VM_USER@$DR_VM_IP" \
-                    "cmd /c 'echo SELECT STATUS FROM V\$INSTANCE; | sqlplus -s / as sysdba' | findstr OPEN" || echo "")
+                    "powershell -Command \"'SELECT STATUS FROM V\`\$INSTANCE;' | sqlplus -s / as sysdba | Select-String 'OPEN'\"" || echo "")
 
+                # Use PowerShell to count tables
                 tables_restored=$(ssh -p "$DR_VM_PORT" "$DR_VM_USER@$DR_VM_IP" \
-                    "cmd /c 'echo SELECT COUNT(*) FROM DBA_TABLES WHERE OWNER NOT IN (''SYS'',''SYSTEM''); | sqlplus -s / as sysdba' | grep -o '[0-9]*' | tail -1" || echo "0")
+                    "powershell -Command \"'SELECT COUNT(*) FROM DBA_TABLES WHERE OWNER NOT IN (''SYS'',''SYSTEM'');' | sqlplus -s / as sysdba | Select-String -Pattern '[0-9]+' | ForEach-Object { \$_.Matches[0].Value } | Select-Object -Last 1\"" || echo "0")
                 tables_restored=$(echo "$tables_restored" | tr -cd '0-9')
                 [ -z "$tables_restored" ] && tables_restored=0