* [Zone] State saving improvements
* Make sure we load spawn enabled off of the state row
* Update npc.h
* Update spawn2.cpp
* Update database_instances.cpp
* Update database_instances.cpp
* Check for valid JSON before using it
* Do not allow nested keys to set be set an expiration
* Prevent overwriting of existing object or array
* Nested deletion support
* Update data_bucket.cpp
* Test cases
* More test cases, fix
* Update databuckets.cpp
* Update databuckets.cpp
* Basic databucket tests
* Update databuckets.cpp
* Update databuckets.cpp
* Save spawns
* Update base_zone_state_spawns_repository.h
* Zone state save work
* Code cleanup
* More cleanup
* Database migration
* Update database_update_manifest.cpp
* Revert decay at storage model
* Code cleanup
* More cleanup
* More cleanup
* More cleanup
* Entity variables
* Add entity variables to the schema
* Post rebase
* Checkpoint
* Serialize / deserialize buffs
* Current hp / mana / end save / load
* Save / load current_waypoint
* Add zone spawn protection
* Finishing touches
* Cleanup
* Update zone_save_state.cpp
* Cleanup
* Update zone_save_state.cpp
* Update npc.cpp
* Update npc.cpp
* More
* Update perl_npc.cpp
* Update zone_loot.cpp
