SPIGOT-7617: Add BlockExplodeEvent#getExplodedBlockState()

By: 2008Choco <hawkeboyz2@hotmail.com>

paper-server/nms-patches/net/minecraft/world/damagesource/DamageSource.patch

@@ -1,12 +1,14 @@
 --- a/net/minecraft/world/damagesource/DamageSource.java
 +++ b/net/minecraft/world/damagesource/DamageSource.java
-@@ -21,6 +21,86 @@
+@@ -21,6 +21,88 @@
      private final Entity directEntity;
      @Nullable
      private final Vec3D damageSourcePosition;
 +    // CraftBukkit start
 +    @Nullable
 +    private org.bukkit.block.Block directBlock; // The block that caused the damage. damageSourcePosition is not used for all block damages
++    @Nullable
++    public org.bukkit.block.BlockState blockState; // The block state of the block relevant to this damage source
 +    private boolean withSweep = false;
 +    private boolean melting = false;
 +    private boolean poison = false;