� Improve Button component stylesheet; removed duplicate styles (#21535)
� Improve Button component stylesheet; removed duplicate styles (#21535)

Summary:
Updated Button component inspiration. Refactored code takes advantage of Platform Specific Code, as we want to re-use as much code as possible.

1. Import Button component
2. Button should work the same

https://github.com/facebook/react-native/pull/19752

[GENERAL] [ENHANCEMENT] [Button] - Uses spread operator for platform specific code in creating styles
Pull Request resolved: https://github.com/facebook/react-native/pull/21535

Differential Revision: D10248048

Pulled By: TheSavior

fbshipit-source-id: 7260fa56f15b70b7c9499c8da418db7b2214b0dd

facebook/react-native,facebook/react-native,exponentjs/react-native,myntra/react-native,pandiaraj44/react-native,javache/react-native,exponent/react-native,myntra/react-native,exponentjs/react-native,facebook/react-native,myntra/react-native,hammerandchisel/react-native,myntra/react-native,arthuralee/react-native,hoangpham95/react-native,exponent/react-native,hammerandchisel/react-native,janicduplessis/react-native,janicduplessis/react-native,pandiaraj44/react-native,exponentjs/react-native,exponent/react-native,exponent/react-native,exponentjs/react-native,hoangpham95/react-native,facebook/react-native,pandiaraj44/react-native,hoangpham95/react-native,arthuralee/react-native,javache/react-native,javache/react-native,exponentjs/react-native,hammerandchisel/react-native,pandiaraj44/react-native,javache/react-native,facebook/react-native,hammerandchisel/react-native,myntra/react-native,hammerandchisel/react-native,myntra/react-native,javache/react-native,exponentjs/react-native,arthuralee/react-native,hoangpham95/react-native,facebook/react-native,janicduplessis/react-native,hammerandchisel/react-native,pandiaraj44/react-native,hoangpham95/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,exponent/react-native,javache/react-native,hammerandchisel/react-native,pandiaraj44/react-native,janicduplessis/react-native,exponentjs/react-native,pandiaraj44/react-native,arthuralee/react-native,facebook/react-native,exponent/react-native,javache/react-native,janicduplessis/react-native,exponentjs/react-native,janicduplessis/react-native,javache/react-native,myntra/react-native,hammerandchisel/react-native,exponent/react-native,hoangpham95/react-native,arthuralee/react-native,janicduplessis/react-native,exponent/react-native,myntra/react-native,hoangpham95/react-native,facebook/react-native,hoangpham95/react-native,myntra/react-native,pandiaraj44/react-native