[Bleeding] Add BrewingStand API. Thanks N3X15 & md_5

By: Erik Broes <erikbroes@grum.nl>

paper-api/src/main/java/org/bukkit/block/BrewingStand.java

@@ -0,0 +1,21 @@
+package org.bukkit.block;
+
+/**
+ * Represents a brewing stand.
+ */
+public interface BrewingStand extends BlockState, ContainerBlock {
+
+    /**
+     * How much time is left in the brewing cycle
+     *
+     * @return Brew Time
+     */
+    int getBrewingTime();
+
+    /**
+     * Set the time left before brewing completes.
+     *
+     * @param brewTime Brewing time
+     */
+    void setBrewingTime(int brewTime);
+}