Save number of effectively blocked domains in /etc/pihole/numBlocked

Signed-off-by: DL6ER <dl6er@dl6er.de>

gravity.sh

@@ -510,9 +510,11 @@ gravity_ParseBlacklistDomains() {
   
   if [[ -f "${piholeDir}/${whitelistMatter}" ]]; then
     gravity_ParseDomainsIntoHosts "${piholeDir}/${whitelistMatter}" "${piholeDir}/${accretionDisc}"
+    grep -c "^" "${piholeDir}/${whitelistMatter}" > "${piholeDir}/numBlocked" 2> /dev/null
   else
     # There was no whitelist file, so use preEventHorizon instead of whitelistMatter.
     gravity_ParseDomainsIntoHosts "${piholeDir}/${preEventHorizon}" "${piholeDir}/${accretionDisc}"
+    grep -c "^" "${piholeDir}/${preEventHorizon}" > "${piholeDir}/numBlocked" 2> /dev/null
   fi
 
   # Move the file over as /etc/pihole/gravity.list so dnsmasq can use it