Feature/ball trail

[PhiBabin]

Add a trail that follow the ball. This help track were the ball has pass. It's especially useful when checking if the ball entered the goal.
It needs to be test in real life with multiple ball. I think multiple balls will need a more complex solution, since you probably need to track the ball.
https://gph.is/g/ZkO33mZ

[TwistedSim]

The BallTracker on StrategyAI keep track on the ball ID over time and should be pretty stable. The packet sent to the UIDebug should include this if it's not the case already.

[PhiBabin]

The BallTracker on StrategyAI keep track on the ball ID over time and should be pretty stable. The packet sent to the UIDebug should include this if it's not the case already.

I will look into it. But the main problem with using a ball ID is that the goal of the line is to show the unfiltered position of the ball, not the filtered one. Are the vision packet send by ssl-vision use the same id for the same ball?

[PhiBabin]

Tested irl. Multi ball is not handle correctly. We need to either reuse the ball position from the Ai (complexify the communications) or add a dump ball tracker in the ui (seem overkill).

[wonwon0]

@PhiBabin merge!

[PhiBabin]

This PR does not work if there are multiple balls. I could add an option to disable it, if it's annoying.