Fixed TrapDoor and added MaterialData for LONG_GRASS. Thanks sunkid!

By: EvilSeph <evilseph@unaligned.org>

paper-api/src/main/java/org/bukkit/material/LongGrass.java

@@ -0,0 +1,57 @@
+package org.bukkit.material;
+
+import org.bukkit.GrassSpecies;
+import org.bukkit.Material;
+
+/**
+ * Represents the different types of long grasses.
+ */
+public class LongGrass extends MaterialData {
+    public LongGrass() {
+        super(Material.LOG);
+    }
+
+    public LongGrass(GrassSpecies species) {
+        this();
+        setSpecies(species);
+    }
+
+    public LongGrass(final int type) {
+        super(type);
+    }
+
+    public LongGrass(final Material type) {
+        super(type);
+    }
+
+    public LongGrass(final int type, final byte data) {
+        super(type, data);
+    }
+
+    public LongGrass(final Material type, final byte data) {
+        super(type, data);
+    }
+
+    /**
+     * Gets the current species of this grass
+     *
+     * @return GrassSpecies of this grass
+     */
+    public GrassSpecies getSpecies() {
+        return GrassSpecies.getByData(getData());
+    }
+
+    /**
+     * Sets the species of this grass
+     *
+     * @param species New species of this grass
+     */
+    public void setSpecies(GrassSpecies species) {
+        setData(species.getData());
+    }
+
+    @Override
+    public String toString() {
+        return getSpecies() + " " + super.toString();
+    }
+}