Deprecate BlockData#getDestroySpeed for removal

The method sadly is not usable in 1.21 without a player as all of an
enchantments attribtue modifiers rely on a base value supplied by a
player. The method could only offer a rough estimate based on some
default values, however a better method for this should be added down
the line rather than trying to force such logic into the existing one.

patches/api/Block-Ticking-API.patch

@@ -55,7 +55,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 --- a/src/main/java/org/bukkit/block/data/BlockData.java
 +++ b/src/main/java/org/bukkit/block/data/BlockData.java
 @@ -0,0 +0,0 @@ public interface BlockData extends Cloneable {
-      */
+     @Deprecated(forRemoval = true, since = "1.21")
      float getDestroySpeed(@NotNull ItemStack itemStack, boolean considerEnchants);
      // Paper end - destroy speed API
 +