It's not that kind of AI bud, it's enemy ai, code to make the enemy, chase, evade ect.
Was it created with AI though? haven't even looked at it yet, not sure I could tell if it was...
check the disclosure on individual pages the movement one says 
, further reading the rest of the page it sounds like it's just the default characterbody2d script with a few vars exported to the inspector, and a line in jump something like: if Input.is_action_just_released("jump") and body.velocity.y < 0.0: body.velocity.y *= 0.5
as for the chase ai, you could just make it yourself following a tutorial like this and learn a tiny bit on how godot works, collisions are a very useful thing to try and get your head around