SPIGOT-5270: Call BlockSpreadEvent when bamboo saplings grow

nms-patches/BlockBambooSapling.patch

@@ -0,0 +1,10 @@
+--- a/net/minecraft/server/BlockBambooSapling.java
++++ b/net/minecraft/server/BlockBambooSapling.java
+@@ -74,6 +74,6 @@
+     }
+ 
+     protected void a(World world, BlockPosition blockposition) {
+-        world.setTypeAndData(blockposition.up(), (IBlockData) Blocks.BAMBOO.getBlockData().set(BlockBamboo.e, BlockPropertyBambooSize.SMALL), 3);
++        org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockSpreadEvent(world, blockposition, blockposition.up(), (IBlockData) Blocks.BAMBOO.getBlockData().set(BlockBamboo.e, BlockPropertyBambooSize.SMALL), 3); // CraftBukkit - BlockSpreadEvent
+     }
+ }