Create example repositories leveraging javascript backend

[tobni]

Is your feature request related to a problem? Please describe.

1. Example building a FaaS compatible package
2. Example building frontend and backend with JS
3. Example building frontend with pex backend (python)
4. ???

Describe the solution you'd like

Describe alternatives you've considered

Additional context

[AlexTereshenkov]

Thanks for this issue to track progress, this is great. I've created https://github.com/AlexTereshenkov/example-javascript with the minimal configuration and have asked the team to move it under the pantsbuild org. Once it's there, we can add more code and docs to it.

[AlexTereshenkov]

We now have https://github.com/pantsbuild/example-javascript, feel free to add more features as our JS support matures.