Add ItemFilter API

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>at.pcgamingfreaks</groupId>
 	<artifactId>Minepacks-API</artifactId>
-	<version>2.0</version>
+	<version>2.0.11</version>
 
 	<scm>
 		<connection>scm:git:git@github.com:GeorgH93/Minepacks.git</connection>

src/at/pcgamingfreaks/Minepacks/Bukkit/API/ItemFilter.java

@@ -0,0 +1,25 @@
+/*
+ *   Copyright (C) 2019 GeorgH93
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package at.pcgamingfreaks.Minepacks.Bukkit.API;
+
+import org.bukkit.inventory.ItemStack;
+
+public interface ItemFilter
+{
+	boolean isItemBlocked(ItemStack item);
+}

src/at/pcgamingfreaks/Minepacks/Bukkit/API/MinepacksPlugin.java

@@ -127,4 +127,6 @@ public interface MinepacksPlugin
 	 * @return True if the player can use a backpack. False if not.
 	 */
 	boolean isPlayerGameModeAllowed(Player player);
+
+	@Nullable ItemFilter getItemFilter();
 }