Added MaterialData support for SAPPLING, POWERED_RAIL, and DETECTOR_RAIL.

By: sunkid <sunkid@iminurnetz.com>

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

@@ -0,0 +1,40 @@
+package org.bukkit.material;
+
+import org.bukkit.Material;
+
+/**
+ * Represents a powered rail
+ */
+public class PoweredRail extends ExtendedRails implements Redstone {
+    public PoweredRail() {
+        super(Material.POWERED_RAIL);
+    }
+
+    public PoweredRail(final int type) {
+        super(type);
+    }
+
+    public PoweredRail(final Material type) {
+        super(type);
+    }
+
+    public PoweredRail(final int type, final byte data) {
+        super(type, data);
+    }
+
+    public PoweredRail(final Material type, final byte data) {
+        super(type, data);
+    }
+
+    public boolean isPowered() {
+        return (getData() & 0x8) == 0x8;
+    }
+
+    /**
+     * Set whether this PoweredRail should be powered or not.
+     * @param isPowered whether or not the rail is powered
+     */
+    public void setPowered(boolean isPowered) {
+        setData((byte) (isPowered ? (getData() | 0x8) : (getData() & ~0x8)));
+    }
+}