Kill BatchPacket, clean up batching related things

DataPacketSendEvent and DataPacketReceiveEvent will no longer capture BatchPackets
In most places strings are now used instead of DataPackets, to remove limitations on what data can be sent to a network interface
Removed CraftingManager's cyclic dependency on Server

There is a lot more work to do aside from this, but this commit is intended to clean up what is necessary to fix the handling of BatchPacket.

src/pocketmine/network/mcpe/NetworkCompression.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\network\mcpe;
+
+final class NetworkCompression{
+	public static $LEVEL = 7;
+	public static $THRESHOLD = 256;
+
+	private function __construct(){
+
+	}
+
+	public static function decompress(string $payload) : string{
+		return zlib_decode($payload, 1024 * 1024 * 64); //Max 64MB
+	}
+
+	/**
+	 * @param string $payload
+	 * @param int    $compressionLevel
+	 *
+	 * @return string
+	 */
+	public static function compress(string $payload, ?int $compressionLevel = null) : string{
+		return zlib_encode($payload, ZLIB_ENCODING_DEFLATE, $compressionLevel ?? self::$LEVEL);
+	}
+}