[Refactor] Refactor lua serializer and make Lua data classes private/read only

[Hartie95]

• Allow Lua serializers to set private fields without setters in objects
  • This is done by using reflection apis to use setAccessible to true for the fields
  • This allows removing setters from read only lua based objects
• Moved all Lua data class fields to private, and only make them available via getters, to make them effectively read only
  • For now only SceneReplaceable.value is still being written to via scriptlib method and needs to be changed in the future to make the LuaScript data cache static
• Also added some missing fields to SceneObject, SceneRegion and SceneMonster

[sonarcloud[bot]]

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