add wrap function

[Tekkitslime]

Implementation of a wrap function, mainly to avoid overflow.

[Peter0x44]

To clarify, godot also provides such a function
https://docs.godotengine.org/en/stable/classes/[email protected]#class-gdscript-method-wrapf
so it's not entirely without precedent
still not sure this is something commonly used or worth it, but I can't see a reason not to include it either

[raysan5]

@Tekkitslime Thanks for the addition!

[quantumedbox]

It's quite quite handy when you need to operate on wrapping subrange. For example, clock might be wrapped between -PI and PI to get rotation in closed range. Time in general follows such repeating systems often.