Invertedai waypoints ue4

[rf-ivtdai]

Description

Hi there, I am an ML engineer from Inverted AI. I've been using the invertedai_traffic PythonAPI examples, and noticed a few issues need fixing before users can run Carla simulations with our APIs more smoothly.

1. The script spawns actors into Carla based on agent states and properties returned by IAI, but fails for most agents because their carla transform locations has z = 0, using something like z = 0.1 improves things a lot.
2. With the above fix, there are still occasional failures in actor spawning, resulting in downstream errors when --iai-log is enabled, this is also fixed in this PR.
3. We introduced a new way to drive IAI agents better: by passing carla waypoints to our API. The command line options and code are included in this change.
4. Carla pedestrians have orientations in degrees but need to be converted into radians prior to being passed to Inverted AI.
5. The default map Town10 is not loaded into Carla world, which causes downstream errors especially when getting waypoints from Carla.
6. We noticed setting a max_speed for IAI agents improves driving behaviour.

Fixes #

Where has this been tested?

• **Platform(s):Ubuntu
• **Python version(s):Python 3.8 & 3.10
• **Unreal Engine version(s):UE4

This PR is applicable to the same example for ue5-dev branch, as the logic and resources used calling inverted AI APIs are the same, and are independent of the engine and assets.

Possible Drawbacks

No known drawbacks. Tested with IAI cars only or Carla pedestrians + IAI cars.

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This change is 

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would update our CHANGELOG.md based on your changes.

[KieranRatcliffeInvertedAI]

@rf-ivtdai Should this not be outright deleted or kept in instead of being commented?

[rf-ivtdai]

I'm actually hoping to still run this with IAI cars and the rest of the change.