Implementing Object Detecting and Tracking into a drone

The Drone Dojo mission is to provide courses and hardware kits for you to partly do what you are seeking. The Programming course teaches drone coding and OpenCV for object recognition is used in Precision Landing and the Rover course. There are numerous Drone Dojo Youtube videos to check out as well.

Ready to fly drones was recently brought up -
https://community.dojofordrones.com/t/which-drone-should-i-buy/968/2

A simple search finds what might be what you are after -
https://www.youtube.com/watch?v=vDOkUHNdmKs