Add simDisableActor API

[Rajat Singhal (rajat2004)]

Mentioned in #2552
My first try with UE-specific coding, so things would probably be wrong 😅

Based on https://unrealcpp.com/hide-and-disable-actor/, https://docs.unrealengine.com/en-US/API/Runtime/Engine/GameFramework/AActor/index.html and some forum posts

[Rajat Singhal (rajat2004)]

Tested this to be working properly on Linux, with the simulation working properly after simDisableActor() was called. Object doesn't occur in the visual rendering and no collision as well

Thoughts:
Object still appears in the list when simListSceneObjects is called. Should this be removed?
Add enableActor() API? This might lead to it being called on things which haven't been disabled, or maybe something new also

Will need to look into whether the above both things can be done or not
Edit: enableActor() should be easily doable, since it would just need the reverse of the bool arguments to the UE functions

[Rajat Singhal (rajat2004)]

Rebased on master

[Rajat Singhal (rajat2004)]

Closing this in favour of #2651
FYI Ratnesh Madaan (@madratman)