Implementation of spawner tags and mechanisms for LocationTags (#2288)
Adds the following tags: - <LocationTag.spawner_spawn_delay> - <LocationTag.spawner_minimum_spawn_delay> - <LocationTag.spawner_maximum_spawn_delay> - <LocationTag.spawner_player_range> - <LocationTag.spawner_range> - <LocationTag.spawner_max_nearby_entities> - <LocationTag.spawner_count>
Adds the following mechanisms: - <LocationTag.spawner_delay_data> - <LocationTag.spawner_max_nearby_entities> - <LocationTag.spawner_player_range> - <LocationTag.spawner_range> - <LocationTag.spawner_count>
Fixes a shortcoming in Spigot code handling the ItemTag.spawner_delay_data mechanism that causes failure if the maximum and minimum delay were set in an order that caused them to be out of bounds. (commit: 72aba20)
