Expand FallingBlock API

- add auto expire setting
- add setter for block data
- add accessors for block state

== AT ==
public net.minecraft.world.entity.item.FallingBlockEntity blockState

Co-authored-by: Lukas Planz <lukas.planz@web.de>

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftFallingBlock.java

@@ -33,6 +33,31 @@ public class CraftFallingBlock extends CraftEntity implements FallingBlock {
     public BlockData getBlockData() {
         return CraftBlockData.fromData(this.getHandle().getBlockState());
     }
+    // Paper start - Expand FallingBlock API
+    @Override
+    public void setBlockData(final BlockData blockData) {
+        Preconditions.checkArgument(blockData != null, "blockData");
+        final net.minecraft.world.level.block.state.BlockState oldState = this.getHandle().blockState, newState = ((CraftBlockData) blockData).getState();
+        this.getHandle().blockState = newState;
+        this.getHandle().blockData = null;
+
+        if (oldState != newState) this.update();
+    }
+
+    @Override
+    public org.bukkit.block.BlockState getBlockState() {
+        return org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(this.getHandle().blockState, this.getHandle().blockData);
+    }
+
+    @Override
+    public void setBlockState(final org.bukkit.block.BlockState blockState) {
+        Preconditions.checkArgument(blockState != null, "blockState");
+        // Calls #update if needed, the block data compound tag is not synced with the client and hence can be mutated after the sync with clients.
+        // The call also clears any potential old block data.
+        this.setBlockData(blockState.getBlockData());
+        if (blockState instanceof final org.bukkit.craftbukkit.block.CraftBlockEntityState<?> tileEntity) this.getHandle().blockData = tileEntity.getSnapshotNBT();
+    }
+    // Paper end - Expand FallingBlock API
 
     @Override
     public boolean getDropItem() {
@@ -101,4 +126,15 @@ public class CraftFallingBlock extends CraftEntity implements FallingBlock {
             this.setHurtEntities(true);
         }
     }
+    // Paper start - Expand FallingBlock API
+    @Override
+    public boolean doesAutoExpire() {
+        return this.getHandle().autoExpire;
+    }
+
+    @Override
+    public void shouldAutoExpire(boolean autoExpires) {
+        this.getHandle().autoExpire = autoExpires;
+    }
+    // Paper end - Expand FallingBlock API
 }