add StatusEffect SpawnPositionType TargetInventory

[DrBruhman]

https://github.com/FakeFishGames/Barotrauma/blob/master/Barotrauma/BarotraumaShared/SharedSource/StatusEffects/StatusEffect.cs#L137

the lack of SpawnPositionType TargetInventory made me do this
itemcomponent in item

<StatusEffect EventTargetTag="spawnithere">
  <DropContainedItems/> --because it will refuse to spawn it if inventory is full
  <TriggerEvent identifier="spawn_item_event" />
</StatusEffect>

event prefab

<ScriptedEvent identifier="spawn_item_event">
  <SpawnAction TargetInventory="spawnithere" ItemIdentifier="item_i_want_to_spawn" />
  <ClearTagAction Tag="spawnithere"/>
</ScriptedEvent>

and all this to spawn item in target's inventory

hope vanilla lua alternative will be here soon