Implement new 1.21 copper blocks (#6366)

Added the following new blocks:
- All types of Copper Bulb
- All types of Copper Door
- All types of Copper Trapdoor
- All types of Chiseled Copper
- All types of Copper Grate

src/block/CopperDoor.php

@@ -0,0 +1,53 @@
+<?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\block;
+
+use pocketmine\block\utils\CopperTrait;
+use pocketmine\block\utils\ICopper;
+use pocketmine\item\Item;
+use pocketmine\math\Facing;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
+
+class CopperDoor extends Door implements ICopper{
+	use CopperTrait{
+		onInteract as onInteractCopper;
+	}
+
+	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
+		if ($player !== null && $player->isSneaking() && $this->onInteractCopper($item, $face, $clickVector, $player, $returnedItems)) {
+			//copy copper properties to other half
+			$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
+			$world = $this->position->getWorld();
+			if ($other instanceof CopperDoor) {
+				$other->setOxidation($this->oxidation);
+				$other->setWaxed($this->waxed);
+				$world->setBlock($other->position, $other);
+			}
+			return true;
+		}
+
+		return parent::onInteract($item, $face, $clickVector, $player, $returnedItems);
+	}
+}