need AnimationView.respectAnimationFrameRate or setSubFrame

[xiaobaDev]

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Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] i want lottie play use the animation file frame rate ,(not the device frame rate)

Describe the solution you'd like A clear and concise description of what you want to happen. pelase add the api like the ios and web impl

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered. we consider the performance,so we want the less frequent draw

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