Add option to teleport to spawn on nether ceiling damage

purpur-server/minecraft-patches/sources/net/minecraft/world/entity/Entity.java.patch

@@ -59,6 +59,14 @@
          this.position = Vec3.ZERO;
          this.blockPosition = BlockPos.ZERO;
          this.chunkPosition = ChunkPos.ZERO;
+@@ -908,6 +_,7 @@
+             && this.level.paperConfig().environment.netherCeilingVoidDamageHeight.test(v -> this.getY() >= v)
+             && (!(this instanceof Player player) || !player.getAbilities().invulnerable))) {
+             // Paper end - Configurable nether ceiling damage
++            if (this.level.purpurConfig.teleportOnNetherCeilingDamage && this.level.getWorld().getEnvironment() == org.bukkit.World.Environment.NETHER && this instanceof ServerPlayer player) player.teleport(io.papermc.paper.util.MCUtil.toLocation(this.level, this.level.getSharedSpawnPos())); else // Purpur - Add option to teleport to spawn on nether ceiling damage
+             this.onBelowWorld();
+         }
+     }
 @@ -1830,7 +_,7 @@
      }