Jacquerel 54f2e69b86 Basic mobs can emote when they get a new target (#76654) ...

## About The Pull Request


![image](https://github.com/tgstation/tgstation/assets/7483112/c16adf49-b075-42ee-a5e1-d998e0e77227)

Fixes #76624
Restores lost functionality for a mob to play an emote when it acquires
a new target.
Also I added a generic blackboard key change signal which could
potentially have other uses in the future.

## Why It's Good For The Game

It's good feedback to know when a mob has chosen to target something.

## Changelog

🆑
fix: Carp, Trees, and Festivus Poles will once more sometimes emote at
you if they think you are looking at them the wrong way, before they
come over to beat you up.
/🆑

2023-07-16 10:47:09 -07:00

1.8 KiB

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