add region checker cron

cron/regionChecker.php

@@ -0,0 +1,26 @@
+<?php
+    $statement = $RUNTIME['PDO']->prepare("SELECT * FROM regions");
+    $statement->execute(); 
+
+    ini_set('default_socket_timeout', 3);
+
+    $ctx = stream_context_create(array('http'=>
+        array(
+            'timeout' => 3,  //1200 Seconds is 20 Minutes
+        )
+    ));
+
+    while($row = $statement->fetch())
+    {
+        $result = @file_get_contents($row['serverURI']."jsonSimStats", false, $ctx);
+
+        if($result == FALSE || $result == "")
+        {
+            sendInworldIM("00000000-0000-0000-0000-000000000000", $row['owner_uuid'], "Inventory", $RUNTIME['GRID']['HOMEURL'], "WARNUNG: Deine Region '".$row['regionName']."' ist nicht erreichbar und wurde deshalb aus dem Grid entfernt."); 
+            echo "Die Region ".$row['regionName']." von ".$RUNTIME['OPENSIM']->getUserName($row['owner_uuid'])." ist nicht erreichbar.\n";
+
+            $statementUpdate = $RUNTIME['PDO']->prepare('DELETE FROM regions WHERE uuid = :uuid');
+            $statementUpdate->execute(['uuid' => $row['uuid']]);
+        }
+    }    
+?>