feat: improved shake function

[amyspark-ng]

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Right now the shake function it's kinda meh, if you want it to have a certain duration you can't and if you put it in onUpdate it will break

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For the function to have 3 parameters, strength, duration, and interval (interval between each "shake")

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I think the Geometry Dash shake trigger is exactly what im talking about
https://www.youtube.com/watch?v=aBBYAEOatN0