fix: add android pageMargin

[MateWW]

Fix for issue #231

Test Plan

What are the steps to reproduce (after prerequisites)?

Prepare testing component with this body:

      <SafeAreaView style={{flex: 1, backgroundColor: 'white'}}>
        <ViewPager pageMargin={24} style={{flex: 1}}>
          <View style={{flex: 1, backgroundColor: 'red'}} />
          <View style={{flex: 1, backgroundColor: 'blue'}} />
        </ViewPager>
        <View style={{flex: 1, backgroundColor: 'yellow'}} />
        <ViewPager pageMargin={24} style={{flex: 1}} orientation="vertical">
          <View style={{flex: 1, backgroundColor: 'green'}} />
          <View style={{flex: 1, backgroundColor: 'tomato'}} />
        </ViewPager>
      </SafeAreaView>

Compatibility

OS	Implemented
iOS	✅
Android	✅

Checklist

• I have tested this on a device and a simulator