Dont generate responses when no npc is in range

[mikastamm]

Checks the distance of each participant during a conversation, prevents them from speaking if they are too far away
There are two modes for this:

• If there is at least one npc in range to talk, an event gets added about who is too far away & cant reply
• If all are too far away, the players input is not sent to the llm at all

This is done by sending a bool KEY_ACTOR_ISOUTSIDETALKINGRANGE along for each npc in the conversation.

Additionally, there is an option to remove npcs from conversation if they get even further away. This will not remove npcs when there is only one left (It wont end the conversation)

MCM Options added:

• A bool wether to remove far away npcs
• A distance threshold for removal
• A distance threshold for silencing