This is a paid asset, but now you can download Ant AI Free.
Detail this asset from Unity Store: Original Link
Ant AI v1.1.0
This asset is based on a goal-oriented action planning algorithm. To create interesting behaviour of artificial intelligence, you need to create actions, set a goal, and the algorithm will build a plan of your actions based on the current state of the world in order to achieve the goal.
* Editor for creating and testing AI scenarios without coding;
* Easy implementation for any game types;
* Detailed examples of the implementation;
* Simple NavMesh 2D and free art as bonus for your experiments!
More Info: Documentation | Discord