React Platform SVG

Inspired by and code borrowed from https://github.com/chengyin/react-primitives-svg

## Platforms

• react-dom – React Web
• react-native – React Native – iOS/Android
• react-sketchapp – React Sketch.app
• TODO: react-native-macos – React Native macOS
  • Could implement <SvgUri> with a port of https://github.com/alloc/react-native-svgkit
• TODO: react-primitives – React Primitives
  • This should probably be a stub with a <View>, and maybe render compute some rough SVG element sizes to render <View>s from
• TODO: react-figma – React Figma
  • <SvgUri> and <SvgXml> are possible
• TODO: react-native-windows – React Native Windows
  • Track issue: https://github.com/microsoft/react-native-windows/issues/3326

## Credit

• https://github.com/chengyin/react-primitives-svg