Add missing scripting API for Bullet "step"

[Wackytoaster]

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Summary

There does not appear to be a way to access a bullets "step" in javascript.
https://www.construct.net/en/make-games/manuals/construct-3/scripting/scripting-reference/behavior-interfaces/bullet

Possible workarounds or alternatives

Don't think there's a way other than build it in events or code the bullet behavior from scratch... or somehow jerry-rig a stepping behavior onto it

Proposed solution

Fire a behavior event "step" (like moveto behavior "arrived")

Why is this idea important?

I like javascript

Additional remarks

This is a bit off-topic but I also noticed that the setting "Set angle" of the bullet behavior cannot be changed at runtime, neither in events nor in script. Not sure if that is intended. It's not super important for me tho but I thought I'd mention it here.