Standalone Babel/Webpack/React Demo using NPM modules

Relevant package dependences:

fbt (runtime)
babel-plugin-fbt
babel-plugin-fbt-runtime

• yarn install to pull in dependencies down
• yarn manifest to generate enum and source manifests
• yarn collect-fbts to collect FBT translatable texts
• yarn translate-split to generate split translation dictionaries (in src/dict) from translation_input.json
• yarn build to generate static files in ./output/.
  • The commands above are required to run this step
• yarn start to run a local server with hot reloading.
• yarn test to run unit tests.